Skip to content Our drill bit that will drill through hardened steel is specifically designed for drilling high-hardness materials where standard drill bits struggle or fail. Engineered with premium solid carbide and optimized cutting geometry, this drill bit delivers stable performance, precise hole accuracy, and extended tool life when machining hardened steel components.
These drill bits that will cut through hardened steel are suitable for materials with high hardness levels, including heat-treated steel, tool steel, alloy steel, and hardened stainless steel. Advanced CNC grinding ensures sharp cutting edges, excellent concentricity, and efficient chip evacuation, reducing cutting resistance and minimizing the risk of breakage during deep or continuous drilling operations.
With superior wear resistance and thermal stability, this drill bit that will drill through hardened steel performs reliably in high-speed CNC machining environments. It is widely used in mold & die manufacturing, automotive parts, aerospace components, and precision engineering applications where consistent quality and productivity are critical.
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. |
This drill bit that will drill through hardened steel is designed for machining high-hardness materials, typically suitable for hardened steel up to HRC 50–65, depending on drilling conditions, tool diameter, and coating selection. For specific hardness requirements, customized solutions are available.
Standard HSS drill bits lack the hardness, heat resistance, and edge stability required for hardened materials. In contrast, a professional drill bit that will drill through hardened steel is made from premium solid carbide with optimized geometry, allowing it to withstand high cutting temperatures and forces without rapid wear or breakage.
Yes. Our drill bits that will cut through hardened steel feature optimized flute geometry for efficient chip evacuation, which is critical for deep-hole drilling. Proper cutting parameters and coolant application are recommended to achieve the best results in deeper drilling operations.
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.
Our drill bit that will drill through hardened steel is widely used in demanding industrial environments such as mold & die manufacturing, automotive parts machining, aerospace components, and precision engineering workshops.
Designed for drilling hardened steel, heat-treated steel, tool steel, and high-strength alloy steel, these drill bits that will cut through hardened steel perform reliably in both shallow and deep-hole drilling operations. Compared with conventional drill bits, the optimized point geometry and cutting edges significantly reduce cutting forces, improve chip evacuation, and enhance hole quality in high-hardness materials.
Whether used for CNC machining centers or high-precision drilling applications, this drill bit that will drill through hardened steel helps manufacturers achieve consistent results, higher productivity, and reduced tool consumption.
Each drill bit that will drill through hardened steel is manufactured from premium solid carbide and precisely ground using advanced CNC technology to ensure superior accuracy and edge consistency.
These drill bits that will cut through hardened steel feature optimized flute design for efficient chip removal, excellent wear resistance, and high thermal stability. The robust cutting structure allows stable performance under high-speed and high-load machining conditions, even when drilling materials with high hardness levels.
Strict quality control ensures consistent diameter accuracy, surface finish, and tool life from batch to batch. Optional coatings, customized lengths, and shank types are available to meet different machining requirements, making this drill bit that will drill through hardened steel a dependable choice for precision drilling applications.
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 Drill Bit That Will Drill Through Hardened Steel 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 Drill Bit That Will Drill Through Hardened Steel.
Each of your Drill Bit That Will Drill Through Hardened Steel will be sandblasted to effectively remove burrs and improve the finish.
All HNCarbide’s Drill Bit That Will Drill Through Hardened Steel 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 Drill Bit That Will Drill Through Hardened Steel 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.
This drill bit that will drill through hardened steel is designed for machining high-hardness materials, typically suitable for hardened steel up to HRC 50–65, depending on drilling conditions, tool diameter, and coating selection. For specific hardness requirements, customized solutions are available.
Standard HSS drill bits lack the hardness, heat resistance, and edge stability required for hardened materials. In contrast, a professional drill bit that will drill through hardened steel is made from premium solid carbide with optimized geometry, allowing it to withstand high cutting temperatures and forces without rapid wear or breakage.
Yes. Our drill bits that will cut through hardened steel feature optimized flute geometry for efficient chip evacuation, which is critical for deep-hole drilling. Proper cutting parameters and coolant application are recommended to achieve the best results in deeper drilling operations.
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.
Drilling hardened steel is one of the most challenging tasks in metalworking. Hardened materials are designed to resist wear, deformation, and cutting forces, which makes them extremely difficult to machine with conventional tools. Choosing the right drill bit that will drill through hardened steel is critical for achieving clean holes, maintaining tool life, and ensuring stable machining performance.
In this article, we will explain what hardened steel is, why standard drill bits fail, and how to select drill bits that will cut through hardened steel effectively in industrial applications.
Hardened steel refers to steel that has undergone heat treatment processes such as quenching and tempering to increase hardness and strength. These materials are commonly used in molds, dies, automotive components, gears, shafts, and precision mechanical parts.
The main challenge when drilling hardened steel lies in its high hardness and toughness. Excessive cutting forces, heat buildup, and rapid tool wear can easily cause ordinary drill bits to dull, chip, or break. That is why a specialized drill bit that will drill through hardened steel is required instead of standard HSS or low-grade carbide tools.
Many machinists initially attempt to drill hardened steel using general-purpose drill bits. Unfortunately, this often leads to poor results. Standard drill bits lack the necessary hardness, heat resistance, and edge stability required for hardened materials.
Without optimized geometry and advanced materials, drill bits quickly lose their cutting edge, generate excessive heat, and produce inaccurate or rough holes. In contrast, drill bits that will cut through hardened steel are specifically engineered to overcome these challenges through superior material selection and precision manufacturing.
When selecting the right drill bit for hardened steel, several critical features should be considered.
First, material quality is essential. Solid carbide is the preferred choice due to its exceptional hardness, wear resistance, and thermal stability. A high-quality drill bit that will drill through hardened steel maintains sharp cutting edges even under high cutting temperatures.
Second, cutting geometry plays a major role. Optimized point angles, reinforced cutting edges, and properly designed flutes help reduce cutting forces and improve chip evacuation. These features allow drill bits that will cut through hardened steel to perform smoothly and consistently, even in deep-hole drilling operations.
Third, precision grinding and quality control ensure consistent performance. Advanced CNC grinding technology produces accurate diameters, excellent concentricity, and reliable tool life from batch to batch.
Industries that regularly machine hardened steel demand reliable drilling solutions. Mold and die manufacturing is one of the most common applications, where hardened tool steel is used to extend mold life and maintain dimensional accuracy.
Automotive and aerospace industries also rely heavily on hardened components for strength and durability. In these sectors, using a dependable drill bit that will drill through hardened steel ensures accurate hole placement, reduced scrap rates, and improved production efficiency.
General engineering workshops, precision machining centers, and maintenance operations also benefit from using professional-grade drill bits that will cut through hardened steel, especially when working with heat-treated or high-strength alloys.
Selecting the correct drill bit involves more than just choosing the hardest material. Machining conditions, hole depth, machine rigidity, and coolant availability must all be considered.
For high-speed CNC machining, a solid carbide drill bit that will drill through hardened steel with advanced coating options provides the best balance of performance and durability. For lower-speed or intermittent drilling, optimized uncoated or specially coated drill bits that will cut through hardened steel may offer better results depending on the application.
Customization options such as diameter tolerance, flute length, shank type, and coating selection allow manufacturers to tailor drilling tools to their specific needs.
Investing in the right drill bit delivers long-term benefits. Tool life is significantly extended, reducing replacement frequency and overall tooling costs. Hole quality improves, minimizing secondary operations such as reaming or deburring.
Additionally, stable drilling performance reduces machine downtime and improves productivity. A high-quality drill bit that will drill through hardened steel enables manufacturers to maintain consistent output even in demanding production environments.
Drilling hardened steel requires expertise, precision, and the right tooling. Standard drill bits simply cannot meet the demands of high-hardness materials. By choosing a professionally engineered drill bit that will drill through hardened steel, manufacturers can achieve superior performance, longer tool life, and reliable machining results.
Whether you are working in mold manufacturing, automotive production, or precision engineering, selecting the right drill bits that will cut through hardened steel is a key step toward improving efficiency and maintaining competitive advantage.
If you are looking for a reliable drilling solution for hardened steel applications, partnering with an experienced manufacturer can help you find or customize the ideal drill bit for your specific requirements.
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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