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Our 55HRC 4 flute corner rounding end mill is designed for stable edge rounding on alloy steel, mold steel and stainless steel. Made as a carbide corner rounding end mill with TiSiN coating, it offers excellent wear resistance at high cutting speeds and dry or semi-dry machining. The 4-flute design provides smooth cutting, fine surface finish and reliable tool life in continuous production. Available in multiple corner rounding end mill sizes, this tool is ideal for precise profile edges, mold part deburring and contour blending. HNCarbide can also suggest suitable corner rounding end mill speed and feed settings based on your machine and material.
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. |
A corner rounding end mill is a profiling tool used to create a consistent radius on sharp edges instead of a straight chamfer. It is ideal for deburring, edge breaking and improving part appearance on steel, stainless steel, aluminum and copper alloys.
We supply a wide range of corner rounding end mill sizes, from miniature corner rounding end mill tools for tiny radii to larger radii for mold plates and structural parts. Both inch and metric corner rounding end mill dimensions are available; detailed size charts can be provided on request.
A carbide corner rounding end mill is recommended for high-speed machining, abrasive materials and long production runs. An HSS corner rounding end mill is more economical for low-speed machines or small batches. A carbide tipped corner rounding end mill offers a balance of toughness and wear resistance for heavy-duty edge rounding.
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.
This 55HRC corner rounding end mill with bright coating is designed for clean, burr-free edge rounding on aluminum, copper alloys, magnesium alloys and high-finish mold steels or stainless steels. The nano-polished PVD/CVD layer with TiN/CrN metallic gloss offers hardness around 2500–3500 HV, low friction and excellent anti-sticking, so secondary polishing of the workpiece is greatly reduced.
As a carbide corner rounding end mill, the 4-flute design ensures smooth cutting and long tool life. We offer multiple corner rounding end mill sizes, including metric corner rounding end mill and miniature corner rounding end mill options for fine radii, ideal for precision molds, medical parts and electronic components.
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 |
| Name/Grade | Composition | Physical Properties | Features | Applications |
|---|---|---|---|---|
| Bright | Nano-polishing layer: ultra-smooth surface formed by PVD or CVD, optionally with added Si or B elements. Metallic gloss layer: may contain highly reflective TiN (titanium nitride) or CrN (chromium nitride), giving a bright silver or golden appearance. | Hardness: 2500–3500 HV (nano-indentation). Friction coefficient: 0.1–0.2 (down to 0.05 for DLC composite coatings). Heat resistance: 600–800 °C (DLC may oxidise above 400 °C). Adhesion strength: ≥50 N (scratch test). Surface roughness: Ra < 0.02 µm (after polishing). | Mirror finish: nano-scale multilayer structure reduces surface defects and minimises the need for secondary polishing of the workpiece. Anti-adhesion: oleophobic / hydrophobic design (e.g. fluorine-containing compounds) prevents sticking of soft materials such as aluminium and copper. | Recommended materials: non-ferrous metals (aluminium, copper, magnesium alloys), high-finish steels (mould steels such as P20, NAK80; stainless steels 304, 316), composites (CFRP) and engineering plastics (PEEK, PTFE). Typical applications: precision moulds (mobile-phone housings, optical lens mould inserts), medical devices (artificial joints, dental implants), electronic components (aluminium heat sinks, copper electrodes). |
A corner rounding end mill is a profiling tool used to create a consistent radius on sharp edges instead of a straight chamfer. It is ideal for deburring, edge breaking and improving part appearance on steel, stainless steel, aluminum and copper alloys.
We supply a wide range of corner rounding end mill sizes, from miniature corner rounding end mill tools for tiny radii to larger radii for mold plates and structural parts. Both inch and metric corner rounding end mill dimensions are available; detailed size charts can be provided on request.
A carbide corner rounding end mill is recommended for high-speed machining, abrasive materials and long production runs. An HSS corner rounding end mill is more economical for low-speed machines or small batches. A carbide tipped corner rounding end mill offers a balance of toughness and wear resistance for heavy-duty edge rounding.
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.
HNCarbide corner rounding end mill tools are ideal for deburring, edge breaking and profile finishing on steel, stainless steel, aluminum and copper alloys. From small fillets on precision parts to larger chamfer replacement, they help you create consistent radiused edges and reduce secondary polishing. We offer a practical corner rounding end mill set that covers the most common radii and shank diameters, making toolroom management easier.
You can choose from miniature corner rounding end mill options for micro-features, standard tools in popular corner rounding end mill sizes, and larger radii for heavy-duty components or mold plates. Special designs such as back corner rounding end mill tools are also available to reach hidden edges and complex contours in one setup.
HNCarbide supports you with clear guidelines on how to use corner rounding end mill tools for reliable results in everyday production. Our carbide corner rounding end mill range is optimized for balanced cutting, so you can achieve smooth surfaces and predictable tool life even at higher speeds. Recommended corner rounding end mill speed and feed charts help you quickly match cutting data to different materials and machine conditions.
Both inch and metric corner rounding end mill dimensions are available, along with indexable corner rounding end mill and carbide tipped corner rounding end mill options when you need fast insert changes or extra toughness. With consistent quality and technical support, HNCarbide makes it easy to standardize your edge-rounding process across multiple machines.
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 Corner Rounding End Mill 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 Corner Rounding End Mill.
Each of your tungsten Corner Rounding End Mill will be sandblasted to effectively remove burrs and improve the finish.
All HNCarbide’s Corner Rounding End Mill 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’s Corner Rounding End Mill 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.
A corner rounding end mill is a profiling tool used to create a consistent radius on sharp edges instead of a straight chamfer. It is ideal for deburring, edge breaking and improving part appearance on steel, stainless steel, aluminum and copper alloys.
We supply a wide range of corner rounding end mill sizes, from miniature corner rounding end mill tools for tiny radii to larger radii for mold plates and structural parts. Both inch and metric corner rounding end mill dimensions are available; detailed size charts can be provided on request.
A carbide corner rounding end mill is recommended for high-speed machining, abrasive materials and long production runs. An HSS corner rounding end mill is more economical for low-speed machines or small batches. A carbide tipped corner rounding end mill offers a balance of toughness and wear resistance for heavy-duty edge rounding.
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.
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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