Skip to content Our hard metal drill bits are engineered for high-precision drilling in a wide range of industrial machining applications. Manufactured from premium carbide materials and produced with advanced CNC grinding technology, these tools offer excellent wear resistance, cutting stability, and long tool life.
Designed for drilling steel, stainless steel, aluminum, cast iron, and titanium alloys, HNCarbide hard metal drill bits ensure consistent hole quality, precise dimensional accuracy, and smooth chip evacuation, even under high-speed and high-feed conditions.
For customers looking for the best hard metal drill bits, we provide optimized point geometries, refined flute designs, and multiple coating options to enhance performance across different materials. Custom diameters, lengths, tolerances, and standards (metric and inch) are available to meet specific machining requirements.
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 |
|---|---|---|---|---|
| TiXCo3 | Advanced nanocomposite multilayer PVD coating based on Ti, Al, Cr and Si; usually built with a TiN or CrTiN adhesion layer, an AlTi(Si)N core and an extremely hard TiSiN nano-composite top layer. Copper-coloured coating designed specifically for hard-machining tools such as solid carbide drills. | Nano-hardness: 42–44 GPa (≈4300–4500 HV). Coefficient of friction: ~0.4 (PoD test, room temperature, 50 % humidity). Coating thickness: typically 1–4 µm. Maximum service temperature up to about 1,000–1,100 °C, giving excellent thermal stability and oxidation resistance for high-speed drilling in hard materials. | Copper appearance; delivers very high surface quality of the hole and extremely high wear resistance. Our hardest nanocomposite coating, optimized for hard machining and finishing operations in drilling, milling and reaming at very high cutting speeds. Suitable for dry or near-dry machining and for difficult-to-cut, abrasive alloys where long, stable tool life is required. | Recommended workpiece materials: hardened steels (up to ~60–64 HRC), stainless steels, tool steels, nickel-based superalloys, cast irons and other hard or abrasive metals. Typical application fields for drills: high-precision deep-hole and high-speed production drilling of dies and moulds, power-train and transmission components, aerospace turbine and structural parts, and other hard-machining operations demanding tight tolerances and excellent hole finish. |
Hard metal drill bits are high-performance drilling tools made from tungsten carbide combined with a metallic binder. Compared with high-speed steel drills, they offer higher hardness, superior wear resistance, and excellent heat stability, making them ideal for precision CNC drilling and high-speed machining.
Hard metal drill bits are suitable for a wide range of materials, including carbon steel, alloy steel, stainless steel, aluminum, cast iron, and titanium alloys. With optimized geometries and coatings, they can handle both soft and difficult-to-machine materials efficiently.
Compared with HSS drill bits, hard metal drill bits offer:
Higher cutting speeds
Longer tool life
Better resistance to heat and wear
Improved hole accuracy
Although the initial cost is higher, hard metal drill bits significantly reduce overall machining costs by minimizing tool changes and downtime.
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 hard metal drill bits are widely used in automotive manufacturing, mold and die production, aerospace components, and general precision engineering. Designed for stable and accurate drilling, they perform reliably across a wide range of materials including steel, stainless steel, aluminum, cast iron, and titanium alloys.
From shallow drilling to deep-hole applications, our hard metal drill bits deliver consistent hole quality, reduced vibration, and efficient chip evacuation. Compared with conventional tools, optimized cutting geometries extend tool life and improve machining stability, making them a preferred choice for customers seeking the best hard metal drill bits for demanding CNC operations.
Each HNCarbide hard metal drill bits is manufactured from premium carbide materials and finished with advanced CNC grinding technology to ensure high accuracy and dimensional consistency. Precision-ground cutting edges and optimized flute designs provide excellent cutting stability and smooth hole finishes, even at high cutting speeds.
Enhanced wear resistance and thermal stability allow our hard metal drill bits to maintain performance under continuous machining conditions. With optional advanced coatings and customized geometries, they meet the expectations of customers who require the best hard metal drill bits for long tool life, reduced downtime, and improved productivity.
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 Hard Metal Drill Bits 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 Hard Metal Drill Bits.
Each of your Hard Metal Drill Bits will be sandblasted to effectively remove burrs and improve the finish.
All HNCarbide’s Hard Metal Drill Bits will be monitored on WALTER HELICHEEK and ZOLLER 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 Hard Metal Drill Bits 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.
Hard metal drill bits are high-performance drilling tools made from tungsten carbide combined with a metallic binder. Compared with high-speed steel drills, they offer higher hardness, superior wear resistance, and excellent heat stability, making them ideal for precision CNC drilling and high-speed machining.
Hard metal drill bits are suitable for a wide range of materials, including carbon steel, alloy steel, stainless steel, aluminum, cast iron, and titanium alloys. With optimized geometries and coatings, they can handle both soft and difficult-to-machine materials efficiently.
Compared with HSS drill bits, hard metal drill bits offer:
Higher cutting speeds
Longer tool life
Better resistance to heat and wear
Improved hole accuracy
Although the initial cost is higher, hard metal drill bits significantly reduce overall machining costs by minimizing tool changes and downtime.
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.
In modern CNC machining, drilling accuracy and tool reliability play a critical role in overall productivity. Among various cutting tools available on the market, hard metal drill bits have become the preferred choice for manufacturers who demand high precision, long tool life, and stable performance across different materials.
This article explains what hard metal drill bits are, their key advantages, common applications, and how to select the best hard metal drill bits for your machining needs.
Hard metal drill bits are cutting tools manufactured from tungsten carbide-based materials, often referred to as solid carbide. Compared with traditional high-speed steel drills, hard metal drill bits offer significantly higher hardness, heat resistance, and wear resistance.
Thanks to advanced CNC grinding technology, modern hard metal drill bits feature optimized point angles, flute geometries, and cutting edges that ensure precise hole quality even under high-speed and high-feed conditions.
Hard metal drill bits maintain sharp cutting edges even when machining hard or abrasive materials. This results in longer tool life and reduced tool replacement frequency.
With excellent rigidity, hard metal drill bits minimize vibration and deflection during drilling. This ensures tight tolerances, accurate diameters, and smooth hole surfaces.
During high-speed drilling, heat generation is unavoidable. Hard metal drill bits withstand elevated temperatures better than conventional tools, reducing the risk of edge chipping and premature failure.
Higher cutting speeds and feeds are possible with hard metal drill bits, helping manufacturers shorten cycle times and improve overall machining efficiency.
Hard metal drill bits are widely used across multiple industries, including automotive, aerospace, mold making, and general mechanical engineering. Typical applications include:
Drilling carbon steel and alloy steel
Drilling stainless steel with stable chip control
Precision drilling in aluminum and non-ferrous metals
Machining cast iron and titanium alloys
For demanding operations, many manufacturers consider hard metal drill bits the best hard metal drill bits option for consistent, large-scale production.
When comparing hard metal drill bits with high-speed steel (HSS) drill bits, the differences are clear:
| Feature | Hard Metal Drill Bits | HSS Drill Bits |
|---|---|---|
| Hardness | Very high | Medium |
| Cutting Speed | High | Low to medium |
| Tool Life | Long | Short |
| Precision | Excellent | Moderate |
| Cost | Higher initial | Lower initial |
Although the initial cost of hard metal drill bits is higher, their extended tool life and superior performance often result in a lower cost per hole.
Selecting the best hard metal drill bits depends on several technical factors:
Different materials require specific carbide grades and geometries. For example, stainless steel drilling demands sharp cutting edges and optimized chip evacuation.
Point angle, helix angle, and margin design all affect drilling stability and chip control. Optimized geometries significantly improve performance in deep-hole or high-speed drilling.
Advanced coatings such as TiAlN or AlCrN enhance wear resistance and heat protection, especially in dry or high-speed applications.
Rigid CNC machines with stable tool holders allow hard metal drill bits to perform at their full potential.
Standard tools may not always meet specific machining requirements. As a professional manufacturer, HNCarbide offers customized hard metal drill bits with tailored diameters, lengths, tolerances, and coatings.
Custom solutions help manufacturers achieve better performance, especially in challenging materials or special production environments. For many customers, custom tools represent the best hard metal drill bits solution for long-term productivity.
With increasing demands for efficiency, accuracy, and automation, hard metal drill bits are becoming essential in modern machining. Their ability to deliver consistent results, reduce downtime, and support high-speed production makes them a key component in advanced manufacturing systems.
Investing in high-quality hard metal drill bits is not only a tooling decision but also a strategic choice for improving competitiveness in global markets.
Choosing the right hard metal drill bits can significantly impact machining quality and production efficiency. By understanding material requirements, tool geometry, and coating options, manufacturers can select the best hard metal drill bits for their specific applications.
Whether for standard drilling or customized solutions, hard metal drill bits remain the optimal choice for precision, reliability, and long-term cost efficiency.
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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