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As a core option within common types of end mills, the 4 Flutes 55HRC steel end mills flat are designed for stable and efficient machining of carbon steel, alloy steel, and pre-hardened materials up to 55HRC. Compared with other different types of end mills, the 4-flute flat geometry provides a strong balance between cutting rigidity and surface finish, making it well suited for side milling, slotting, and finishing operations in CNC machining.
This tool clearly represents practical end mill types and uses for steel applications where strength, accuracy, and tool life are critical. Optimized flute spacing, reinforced cutting edges, and compatible end mill coating types help reduce vibration and edge wear during continuous cutting. For users evaluating types of end mills for general steel machining, this 4-flute flat design offers reliable performance, consistent results, and broad adaptability across production and custom machining environments.
Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.
Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN40 | 10 | 0.8 | 14.45 | 91.8 | 1,580 | 3,600 | 11.8 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| TiSiN | Ti (titanium): main element, forms TiN nanocrystalline phase. Si (silicon): usually 6–10%, forms amorphous Si₃N₄ phase, refines grains and increases hardness. N (nitrogen): combines with Ti and Si to form a composite structure. | Colour: TiSiN coatings usually appear bronze or dark grey-bronze; exact colour depends on Si content, deposition process (such as PVD) and thickness (1–4 μm). Hardness: 34–42 GPa (≈3400–4200 HV). Friction coefficient: 0.3–0.6 (against steel). Temperature resistance: 1000–1200°C (oxidation resistance). Coating thickness: 1–5 μm (typically 2–3 μm). Deposition temperature: 200–400°C (suitable for carbide tools). | Ultra-high hardness: amorphous Si₃N₄ phase suppresses dislocation movement, giving much higher hardness than TiN (~23 GPa) and TiAlN (~35 GPa). High-temperature stability: suitable for dry cutting and high-speed machining (e.g. quenched steels HRC 60+). Anti-adhesion: reduces built-up edge when machining aluminium alloys, stainless steels and other sticky materials. | Tool coatings: drills, mills (especially suitable for PCB routers, tool life increased by 2–3 times). High-speed cutting of quenched steels, titanium alloys and high-nickel alloys. Mould strengthening: die-casting moulds and stamping dies, improving wear resistance. Industrial parts: piston rings and other high-temperature wear parts. |
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
As a precision-focused option among advanced types of end mills, the HM Series 4 Flutes End Mills Flat are engineered for consistent performance in steel, alloy steel, and stainless steel machining. Within different types of end mills, the HM Series is optimized for applications that demand high rigidity, stable cutting edges, and reliable surface quality. The 4-flute flat design supports efficient side milling and finishing operations while maintaining strength under continuous cutting conditions.
Designed with clearly defined end mill types and uses, the HM Series combines refined flute geometry, controlled edge preparation, and compatible end mill coating types to reduce vibration and improve tool life. For machinists evaluating types of end mills for medium- to high-load CNC machining, this series delivers balanced cutting performance, dimensional stability, and dependable results across a wide range of production environments.
Grade HN55 is made from ultrafine close to nanometer sized WC powder, with very high wear resistancet’s suitable for making miling、 drilling tools and reamers, for high-speed miling of materials with highhardness.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN55 | 9 | 0.3 | 14.50 | 93.8 | 1,960 | 3,800 | 8.0 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| AlCrSiN | Aluminium–chromium–silicon nitride coating containing Si | Hardness: not clearly specified, but the presence of Si significantly increases hardness and toughness (estimated HV＞3500). | Si forms a denser nanostructure, improving wear resistance and high-temperature stability. | Specially designed for drills, end mills and ball-nose mills and other shank-type tools. Suitable for machining high-hardness materials (such as quenched workpieces) and materials after heat treatment. |
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
As a specialized solution within high-performance types of end mills, the 4 Flutes 60HRC stainless steel end mills flat are designed for demanding CNC machining of austenitic and martensitic stainless steels. Compared with other different types of end mills, the 4-flute flat geometry offers enhanced rigidity and improved surface finish, making it suitable for side milling, contouring, and finishing operations where cutting stability is critical.
This tool represents clearly defined end mill types and uses for stainless steel applications that require wear resistance and thermal stability. Optimized flute geometry, reinforced cutting edges, and advanced end mill coating types help reduce built-up edge, control heat generation, and extend tool life. For users selecting types of end mills specifically for stainless steel, this 60HRC flat end mill provides consistent accuracy, stable performance, and reliable results in continuous production environments.
Grade HN44F is made from submicron WC powder, some special additives added.
It’s suitable for making drills and end mills, especially for machining steel,Al-based alloys and Ti-basedalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN44F | 12 | 0.4 | 14.15 | 92.6 | 1,720 | 4,200 | 9.6 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| CrAlTiSiN | Cr: 12–16% Al: 20–24% Ti: 4–8% Si: 6–10% N: 48–52% | Ultra-high hardness: hardness can reach 38–40 GPa (e.g. CrAlSiN/TiAlSiN modulated coatings), much higher than traditional TiN or CrN. Si forms amorphous Si₃N₄, which suppresses dislocation movement and improves wear resistance. Excellent high-temperature performance: oxidation temperature up to 1000–1100°C, suitable for high-speed dry cutting. At high temperature, a dense Al₂O₃ and Cr₂O₃ oxide layer forms on the surface, slowing further oxidation. Low friction coefficient: about 0.375–0.675, depending on modulation period and Si content. Strong adhesion: with transition-layer design (such as AlCrTi alloy layer), critical load can exceed 18 N (scratch test). | High-speed cutting tools: such as mills and drills, suitable for hardened steels, titanium alloys and other difficult-to-machine materials. Mould surface reinforcement: improves wear resistance and thermal-fatigue resistance of stamping dies. Aerospace components: such as turbine-blade coatings, resisting high-temperature oxidation and particle erosion. |
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
Positioned among high-performance types of end mills, the 4 Flutes 65HRC blue nano coated end mills flat are engineered for CNC machining of hardened steel, tool steel, and difficult-to-cut alloys up to 65HRC. Within different types of end mills, the 4-flute flat design provides exceptional rigidity and edge stability, enabling precise side milling and finishing operations under high cutting loads and elevated temperatures.
These tools clearly define advanced end mill types and uses for hard-material applications where wear resistance and thermal control are critical. The blue nano coating enhances heat resistance, reduces friction, and improves chip evacuation, while optimized flute geometry helps suppress vibration and edge chipping. For manufacturers selecting types of end mills for hardened materials and long tool life, this 65HRC flat end mill delivers consistent accuracy, stable cutting performance, and reliable results in high-demand CNC machining environments.
Grade HN44F is made from submicron WC powder, some special additives added.
It’s suitable for making drills and end mills, especially for machining steel,Al-based alloys and Ti-basedalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN44F | 12 | 0.4 | 14.15 | 92.6 | 1,720 | 4,200 | 9.6 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| Nano-Blue | Blue surface layer: may contain AlCrN (aluminium-chromium nitride) or TiSiN (titanium–silicon nitride); the blue colour comes from nano-structured interference. Nanomultilayer structure: alternating layers such as TiN/AlN (individual layer thickness ＜50 nm) to increase hardness and thermal stability. | Hardness: 3000–4000 HV (nano-indentation). Friction coefficient: 0.1–0.3 (lower when combined with DLC). Heat resistance: stable up to 1000°C (oxidation starts above 800°C). Adhesion strength: ≥70 N (critical load in scratch test). Surface roughness: Ra ＜0.05 μm (after polishing). | Blue appearance: achieved by nano-optical thin-film design, and can serve as wear indicator (colour change shows coating loss). Self-lubricating: some Si- or WC-containing nanocoatings can form a silica-based lubricating layer at high temperature. | Recommended workpiece materials High-hardness steels (HRC＞50, such as mould steel, bearing steel). High-temperature alloys (nickel-based / titanium alloys, relying on coating heat resistance). Non-ferrous metals (aluminium and copper alloys, requiring low-friction coating to prevent built-up edge). Composites (CFRP, avoiding adverse reactions between coating and fibres). Typical application fields Aerospace: machining turbine-blade dovetails, milling titanium-alloy structural parts. Automotive moulds: high-precision cavity milling, balancing efficiency and surface quality. Medical devices: micro-machining of cobalt-chromium artificial joints. |
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
As a refined option within performance-driven types of end mills, the HRC60 4 flute corner radius end mills for stainless steel are engineered for stable CNC machining where edge strength and surface integrity are critical. Compared with flat-end designs among different types of end mills, the corner radius geometry strengthens the cutting edge, reducing chipping and improving tool life during side milling, slotting, and contouring operations in stainless steel.
This design represents clearly defined end mill types and uses for stainless steel applications that involve continuous cutting and higher cutting forces. Optimized flute geometry, controlled edge preparation, and wear-resistant end mill coating types help minimize heat concentration and vibration while maintaining consistent surface finish. For users evaluating types of end mills specifically for stainless steel machining, this 4-flute corner radius end mill delivers improved durability, dimensional accuracy, and reliable performance in demanding CNC production environments.
Grade HN44F is made from submicron WC powder, some special additives added.
It’s suitable for making drills and end mills, especially for machining steel,Al-based alloys and Ti-basedalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN44F | 12 | 0.4 | 14.15 | 92.6 | 1,720 | 4,200 | 9.6 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| TiSiN | Ti (titanium): main element, forms TiN nanocrystalline phase. Si (silicon): usually 6–10%, forms amorphous Si₃N₄ phase, refines grains and increases hardness. N (nitrogen): combines with Ti and Si to form a composite structure. | Colour: TiSiN coatings usually appear bronze or dark grey-bronze; exact colour depends on Si content, deposition process (such as PVD) and thickness (1–4 μm). Hardness: 34–42 GPa (≈3400–4200 HV). Friction coefficient: 0.3–0.6 (against steel). Temperature resistance: 1000–1200°C (oxidation resistance). Coating thickness: 1–5 μm (typically 2–3 μm). Deposition temperature: 200–400°C (suitable for carbide tools). | Ultra-high hardness: amorphous Si₃N₄ phase suppresses dislocation movement, giving much higher hardness than TiN (~23 GPa) and TiAlN (~35 GPa). High-temperature stability: suitable for dry cutting and high-speed machining (e.g. quenched steels HRC 60+). Anti-adhesion: reduces built-up edge when machining aluminium alloys, stainless steels and other sticky materials. | Tool coatings: drills, mills (especially suitable for PCB routers, tool life increased by 2–3 times). High-speed cutting of quenched steels, titanium alloys and high-nickel alloys. Mould strengthening: die-casting moulds and stamping dies, improving wear resistance. Industrial parts: piston rings and other high-temperature wear parts. |
Our Corner Radius End Mill drawings clearly show key Corner Radius End Mill dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Corner Radius End Mill sizes for your CNC setup and machining depth before ordering.
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
Grade HN44F is made from submicron WC powder, some special additives added.
It’s suitable for making drills and end mills, especially for machining steel,Al-based alloys and Ti-basedalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN44F | 12 | 0.4 | 14.15 | 92.6 | 1,720 | 4,200 | 9.6 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| Nano-Blue | Blue surface layer: may contain AlCrN (aluminium-chromium nitride) or TiSiN (titanium–silicon nitride); the blue colour comes from nano-structured interference. Nanomultilayer structure: alternating layers such as TiN/AlN (individual layer thickness ＜50 nm) to increase hardness and thermal stability. | Hardness: 3000–4000 HV (nano-indentation). Friction coefficient: 0.1–0.3 (lower when combined with DLC). Heat resistance: stable up to 1000°C (oxidation starts above 800°C). Adhesion strength: ≥70 N (critical load in scratch test). Surface roughness: Ra ＜0.05 μm (after polishing). | Blue appearance: achieved by nano-optical thin-film design, and can serve as wear indicator (colour change shows coating loss). Self-lubricating: some Si- or WC-containing nanocoatings can form a silica-based lubricating layer at high temperature. | Recommended workpiece materials High-hardness steels (HRC＞50, such as mould steel, bearing steel). High-temperature alloys (nickel-based / titanium alloys, relying on coating heat resistance). Non-ferrous metals (aluminium and copper alloys, requiring low-friction coating to prevent built-up edge). Composites (CFRP, avoiding adverse reactions between coating and fibres). Typical application fields Aerospace: machining turbine-blade dovetails, milling titanium-alloy structural parts. Automotive moulds: high-precision cavity milling, balancing efficiency and surface quality. Medical devices: micro-machining of cobalt-chromium artificial joints. |
Our Corner Radius End Mill drawings clearly show key Corner Radius End Mill dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Corner Radius End Mill sizes for your CNC setup and machining depth before ordering.
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
As a versatile option among commonly used types of end mills, the 55 HRC 2-flute ball end mills are designed for smooth and stable CNC machining of steel, alloy steel, and non-ferrous materials. Within different types of end mills, the 2-flute ball nose geometry provides efficient chip evacuation and reduced cutting resistance, making it especially suitable for 3D contouring, curved surfaces, and semi-finishing operations.
This tool clearly defines practical end mill types and uses for applications where surface quality and tool control are essential. The spherical cutting edge enables consistent contact during complex profiling, while the balanced 55 HRC substrate offers a reliable combination of toughness and wear resistance. For users evaluating types of end mills for mold work, cavity machining, or general CNC operations, this 2-flute ball end mill delivers stable performance, smooth finishes, and dependable results across a wide range of machining conditions.
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| TiSiN | Ti (titanium): main element, forms TiN nanocrystalline phase. Si (silicon): usually 6–10%, forms amorphous Si₃N₄ phase, refines grains and increases hardness. N (nitrogen): combines with Ti and Si to form a composite structure. | Colour: TiSiN coatings usually appear bronze or dark grey-bronze; exact colour depends on Si content, deposition process (such as PVD) and thickness (1–4 μm). Hardness: 34–42 GPa (≈3400–4200 HV). Friction coefficient: 0.3–0.6 (against steel). Temperature resistance: 1000–1200°C (oxidation resistance). Coating thickness: 1–5 μm (typically 2–3 μm). Deposition temperature: 200–400°C (suitable for carbide tools). | Ultra-high hardness: amorphous Si₃N₄ phase suppresses dislocation movement, giving much higher hardness than TiN (~23 GPa) and TiAlN (~35 GPa). High-temperature stability: suitable for dry cutting and high-speed machining (e.g. quenched steels HRC 60+). Anti-adhesion: reduces built-up edge when machining aluminium alloys, stainless steels and other sticky materials. | Tool coatings: drills, mills (especially suitable for PCB routers, tool life increased by 2–3 times). High-speed cutting of quenched steels, titanium alloys and high-nickel alloys. Mould strengthening: die-casting moulds and stamping dies, improving wear resistance. Industrial parts: piston rings and other high-temperature wear parts. |
Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.
Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN40 | 10 | 0.8 | 14.45 | 91.8 | 1,580 | 3,600 | 11.8 |
Our ball end mills drawings clearly show key ball end mills dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right ball end mills sizes for your CNC setup and machining depth before ordering.
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
As a stable and productivity-focused option among common types of end mills, the 55 HRC 4-flute ball end mills are engineered for efficient CNC machining of steel and alloy steel in finishing and semi-finishing operations. Compared with other different types of end mills, the 4-flute ball nose design increases tool rigidity and cutting edge engagement, making it well suited for continuous contouring, surface finishing, and complex 3D profiling.
This tool represents well-defined end mill types and uses where improved surface quality and cutting stability are required. The spherical cutting edge ensures smooth tool paths on curved surfaces, while the 55 HRC substrate provides a balanced combination of toughness and wear resistance. For users selecting types of end mills for mold components, cavities, and precision profiles, this 4-flute ball end mill delivers consistent finishes, reduced vibration, and reliable performance in modern CNC machining environments.
Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.
Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.
| Grade | Cobalt content % | Grain size | Density g/cm³ | Hardness HRA | Hardness HV30 | MPa Transverse rupture strength | MPa ·m1/2 Fracture toughness MPa ·m1/2 |
|---|---|---|---|---|---|---|---|
| HN40 | 10 | 0.8 | 14.45 | 91.8 | 1,580 | 3,600 | 11.8 |
| Scientific name | Composition | Physical properties | Features | Typical applications |
|---|---|---|---|---|
| TiSiN | Ti (titanium): main element, forms TiN nanocrystalline phase. Si (silicon): usually 6–10%, forms amorphous Si₃N₄ phase, refines grains and increases hardness. N (nitrogen): combines with Ti and Si to form a composite structure. | Colour: TiSiN coatings usually appear bronze or dark grey-bronze; exact colour depends on Si content, deposition process (such as PVD) and thickness (1–4 μm). Hardness: 34–42 GPa (≈3400–4200 HV). Friction coefficient: 0.3–0.6 (against steel). Temperature resistance: 1000–1200°C (oxidation resistance). Coating thickness: 1–5 μm (typically 2–3 μm). Deposition temperature: 200–400°C (suitable for carbide tools). | Ultra-high hardness: amorphous Si₃N₄ phase suppresses dislocation movement, giving much higher hardness than TiN (~23 GPa) and TiAlN (~35 GPa). High-temperature stability: suitable for dry cutting and high-speed machining (e.g. quenched steels HRC 60+). Anti-adhesion: reduces built-up edge when machining aluminium alloys, stainless steels and other sticky materials. | Tool coatings: drills, mills (especially suitable for PCB routers, tool life increased by 2–3 times). High-speed cutting of quenched steels, titanium alloys and high-nickel alloys. Mould strengthening: die-casting moulds and stamping dies, improving wear resistance. Industrial parts: piston rings and other high-temperature wear parts. |
Our ball end mills drawings clearly show key ball end mills dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right ball end mills sizes for your CNC setup and machining depth before ordering.
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
We Are Commited To Providing High-Quality, Customized solutions At An Affordable price While Also Prioritizing sustainability And ExcellentCustomer Service, These Qualities Make Us A Great choice For Your Cnc Milling Tools Needs
We Only Use unground tungsten carbide rods with HlP sintering and100% virgin material. Our grade includes lsO K05 to K40, frommachining carbon steel to aluminium, non-ferrous metals andtitanium or we develop grade for your applications.
As a HNCarbide customer, you can enjoy five-axis high-precisiongrinding machines from Australia’s ANCA or Germany’s Walter. Themodern workshop with constant temperature and humidity ensuresthe accuracy of each End Mills.
Each of your tungsten steel End Mills will be sandblasted toeffectively remove burrs and improve the finish.
All HNCarbide’s End Mills will be monitored on WALTER HELICHEEK andZOLLER GENlUS 3 to ensure that every dimension is qualified. We arecommitted to controlling the tolerance within 3 UM.
At HNCarbide, every shipment is meticulously packaged to ensure your tools arrive intact.
Each HNCarbide Solid End Mills is individually placed in a shock-resistant protective case, labeled with complete specifications, and sealed in moisture-proof packaging material before being boxed.
Large-volume orders are reinforced with double-wall cardboard boxes or wooden crates to maximize safety during international shipping.
We collaborate with reliable logistics partners to ensure goods are delivered quickly and securely to their destination via air freight, sea freight, or express courier.
The most common types of end mills include flat end mills, ball nose end mills, corner radius end mills, roughing end mills, chamfer end mills, and insert type end mill cutters. Each design serves different machining purposes, such as slotting, contouring, finishing, or high material removal.
Different types of end mills influence surface finish, tool life, chip evacuation, and cutting stability. For example, ball end mills are ideal for 3D surfaces, while corner radius end mills improve edge strength and durability. Selecting the correct geometry helps reduce vibration and improves consistency.
When evaluating what type of end mill for stainless steel, 4-flute end mills or corner radius designs are commonly used. These types of end mills provide higher rigidity and better heat resistance, which is critical for reducing work hardening and extending tool life.
Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.
For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.
Yes.
Regional or customer protection based on sales targets, avoiding price wars among our partners.
Catalogs, brochures, product photos, technical data sheets, online materials.
For key partners, joint promotion, exhibitions and digital marketing support.
Safety stock for fast-moving items and forecast-based production.
Priority production and regular shipments to reduce stock-out risk.
Clear quality warranty policy, quick response to claims.
Replacement, credit or other solutions after confirmation of issues.
Tool selection and cutting parameter advice.
Problem analysis for different materials and machines.
Online training, documents, and when possible, on-site support for key accounts.
If you’re searching for the right types of end mills for your next CNC job, you’ll quickly find that “end mill” is not one tool—it’s a family of cutters with different geometries, coatings, and mounting options. Choosing the correct cutter affects tool life, surface finish, cycle time, and even part accuracy.
In this guide, we’ll break down the most common cnc end mill types, explain end mill types and uses, and give clear recommendations for what type of end mill for aluminum and what type of end mill for stainless steel—without overcomplicating the decision.
Different materials and cutting conditions create different problems: heat, vibration, built-up edge, work hardening, and chip evacuation issues. The correct types of end mills and their uses are designed to solve these problems through:
flute count and flute shape (chip control + rigidity)
end geometry (flat, ball, corner radius)
coatings (heat and wear resistance)
shank and holding method (runout control + stability)
When you match cutter geometry and coating to the job, you get a more stable cut and a more predictable result.
Below are the most widely used end mill cutter types in modern machining.
Flat end mills are among the most common types of end mill used for side milling, slotting, and finishing flat surfaces. They’re a go-to choice for general CNC work, especially in steel and alloy steel.
Typical uses
shoulder milling
slots and pockets
finishing walls and floors (depending on setup)
Ball nose tools are essential when you need smooth 3D surfaces. Among different types of end mills, ball end mills are preferred for contouring, sculpted shapes, molds, and fillets.
Typical uses
3D profiling
surface finishing on complex shapes
blending transitions
Corner radius tools add a small radius at the cutting edge, strengthening it. If you want a stronger edge than a flat end mill, corner radius is often the better choice—especially in tougher materials.
Typical uses
semi-finishing/finishing with stronger edge support
improved tool life in steel/stainless
reduced edge chipping compared to sharp corners
Roughing cutters are designed to remove material quickly. They often use serrated edges to reduce cutting forces and break chips.
Typical uses
fast stock removal
roughing deep pockets or heavy side cuts
reducing machine load versus standard finishing tools
Chamfer tools are used to break edges, create chamfers, and prep parts for assembly. They’re useful for deburring and improving part handling.
Typical uses
edge chamfering
countersink-like features (in some cases)
deburring passes
Flute count is one of the fastest ways to choose between types of end mill bits:
2 flutes: best chip evacuation, common for aluminum and softer materials
3 flutes: a balance of chip space + strength (popular for aluminum with higher productivity)
4 flutes: stronger core and better finishing potential (common in steel/stainless)
5–6 flutes: stronger and often used for finishing and stable cuts in harder materials (requires good chip control and rigidity)
As a general rule: fewer flutes = better chip evacuation; more flutes = higher rigidity and often better finish (when chips are controlled properly).
End mill coating types exist to reduce friction, increase heat resistance, and protect the cutting edge. But coatings are not “always better.” The wrong coating can increase built-up edge or reduce edge sharpness for certain materials.
Common coating goals:
heat resistance for steel and stainless (especially at higher speeds)
wear resistance for hardened materials
low friction for smoother cutting and chip flow
If your application runs hot (stainless, tool steel, hardened steel), coatings can significantly extend tool life. If your job requires a very sharp edge (some aluminum finishing operations), a coating choice should be made carefully.
Many machining problems that look like “bad tooling” are actually holding problems: runout, vibration, or insufficient clamping length.
Common end mill shank types and setups include:
straight shank for collet holding (commonly paired with different end mill collet types like ER collets)
Weldon flat shank (side-lock style holding) for higher torque resistance
hydraulic, shrink-fit, or precision collet systems for minimizing runout
If surface finish and tool life are inconsistent, check the toolholding system before blaming the cutter.
An insert type end mill (or insert type end mill cutter) uses replaceable carbide inserts instead of a solid carbide cutting edge. This style is often chosen for larger diameters and high material removal, especially in production environments.
Pros
lower cost per edge (replace inserts, not the whole tool)
good for heavy roughing and large engagement
flexible insert grade selection by material
Cons
not ideal for very small tools or tight details
usually needs a rigid setup and stable machine
can leave different surface characteristics than solid carbide finishing tools
For precision finishing, solid carbide cutters are often preferred. For aggressive roughing at larger sizes, inserts can be highly efficient.
When selecting what type of end mill for aluminum, your main goals are chip evacuation, preventing built-up edge, and maintaining a sharp cutting action.
Practical recommendations:
choose 2 or 3 flutes (more chip space)
use geometry designed for aluminum (often higher helix + sharp edge)
prioritize smooth chip flow and stable evacuation
use coatings only if they are designed for non-ferrous machining and do not compromise edge sharpness
If your chips are welding to the tool, reduce heat and improve chip evacuation: adjust speeds/feeds, coolant strategy, and tool geometry choice.
For what type of end mill for stainless steel, the biggest challenges are heat, work hardening, and vibration. You want a stable tool with sufficient rigidity and edge strength.
Practical recommendations:
4 flutes is a common baseline (strength and stability)
consider corner radius designs for improved edge strength
select appropriate end mill coating types for heat and wear resistance
prioritize rigidity: shorter stick-out, good holder, controlled runout
If stainless is work hardening, a stable cut and correct engagement matter as much as the cutter. Avoid rubbing—keep the tool cutting consistently.
Use this simple checklist to choose the right types of end mills:
Material: aluminum, steel, stainless, hardened steel?
Operation: roughing, finishing, slotting, 3D contouring?
Flute count: chip space vs rigidity requirement
Geometry: flat vs ball vs corner radius
Coating: heat/wear needs based on material
Holding: verify end mill shank types and holder runout control
Production needs: consider insert type end mill cutter for large-scale roughing
Understanding types of end mills is the fastest way to improve machining results without trial-and-error. By matching geometry, flute count, coatings, and holding method to your material and operation, you’ll get better tool life, better finish, and more stable CNC performance. Whether you’re choosing what type of end mill for aluminum or what type of end mill for stainless steel, the best answer is always application-driven—tool selection should follow the cut you’re actually trying to make.
Before you go, please note that we offer the most up-to-date industry research reports and the most comprehensive product catalogs, so please contact us if you are interested!
Before you go, please note that we offer the most up-to-date industry research reports and the most comprehensive product catalogs, so please contact us if you are interested!
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