HEX Series End mill for hardened steel
HEX Corner Radius End Mill for Hardened Steel HRC60–68
Range reference: KVX-017
- workpiece material
- Hardened Steel
- application type
- Semi-Finishing; Finishing
- flute type
- Corner Radius End Mill
- Coating
- DR3 Coating
• Ultra-fine carbide with 0.4 μm grain size and 9% cobalt • DR3 high-wear-resistant coating for hardened steel machining • Large core diameter up to 68% for higher rigidity • 0° to -5° negative rake angle for stronger edge support • 35° helix angle for stable cutting engagement • Suitable for HRC60–68 hardened steel and mold steel finishing
Enquire about this tool →Technical data
| Item | Range / Notes |
|---|---|
| Tool type | Corner radius end mill |
| Diameter range | D1.0–D12.0 |
| Corner radius range | R0.2–R3.0 |
| Hardness range | HRC60–68 |
| Application | Shoulder, side wall, step, profile, cavity transition |
| Custom service | Diameter, flute length, corner radius, coating, shank, special geometry |
Technical notes
- The HEX corner radius end mill is specially developed for hardened steel machining from HRC60 to HRC68 . It is designed for shoulder finishing, step machining, side-wall finishing, profile machining, and mold cavity transition areas where edge strength, dimensional accuracy, and stable cutting performance are required.
- 1.Material – Ultra-Fine Carbide for HRC60–68 Machining
- The HEX series corner radius end mill is produced from imported ultra-fine grain carbide with a grain size of 0.4 μm and 9% cobalt content.
- This substrate provides:
- • High hardness for machining HRC 60–68 hardened steel
- • Increased edge toughness to withstand interrupted cutting
- • Reduced risk of edge chipping at shoulders and corners
- The material is especially suitable for profile and side-wall finishing in mold and die applications.
- 2. Coating –DR3 High-Wear-Resistant Coating
- The cutting edges are coated with DR3 high wear-resistant coating ( bronze color ), designed for high-temperature and high-load machining conditions.
- • Heat resistance up to 1300°C
- • Excellent wear resistance in continuous side milling
- • Lower friction to reduce cutting heat and improve surface quality
- This coating helps maintain stable cutting performance and extends tool life when machining hardened mold steels.
- 3. Design Features – Optimized for Shoulder and Side Milling
- The geometry of the HEX corner radius end mill is optimized for strength, stability, and accuracy :
- • Large core diameter (up to 68%) for enhanced rigidity during side and shoulder milling
- • Peripheral cutting edge with 0° to -5° negative rake angle , improving edge strength
- • Precisely controlled corner radius , reducing stress concentration at the cutting edge
- • Geometry optimized for consistent tool engagement along the side wall
- This design performs especially well in:
- • Shoulder and step finishing
- • Profile and contour machining
- • Side-wall finishing of hardened mold cavities
- The corner radius structure helps distribute cutting load more evenly, reducing stress concentration and improving edge durability compared with sharp-corner square end mills.
- 4. Application Range
- Suitable for machining hardened steel from HRC 60 to HRC 68 , including:
- • Other mold and die steels
- Typical applications:
- • Mold cavity side-wall finishing
- • Shoulder and step machining
- • Profile finishing after roughing
- • Precision mold and die manufacturing
Technical illustrations and dimension data
