4 Flute Carbide End Mill for Steel – 65 HRC
The Stiger 4 Flute Carbide End Mill for Steel 65 HRC is a premium solid carbide cutting tool specifically engineered for the high-speed machining of hardened steels and difficult-to-machine materials up to 65 HRC. Manufactured from ultra-fine micrograin carbide and enhanced with a high-performance nano coating, this end mill delivers exceptional wear resistance, thermal stability, and cutting performance in demanding machining environments.
Designed with a rigid 4-flute geometry, the cutter provides excellent stability during machining, reducing vibration and deflection while improving surface finish quality. The optimized flute design allows for efficient chip evacuation and consistent cutting performance, making it ideal for finishing, semi-finishing, profiling, contouring, pocketing, and side milling applications.
The advanced coating technology reduces friction and heat generation at the cutting edge, enabling higher cutting speeds and extended tool life when machining hardened tool steels, mould steels, alloy steels, and heat-treated components. Precision-ground cutting edges ensure superior dimensional accuracy and repeatable results in both CNC milling and high-precision manufacturing operations.
Technical Specifications
- Material: Ultra-fine micrograin solid carbide
- Hardness Range: Suitable for materials up to 65 HRC
- Flute Count: 4 Flutes
- Helix Angle: 35°–45° (depending on size)
- Coating: High-performance nano coating for hardened steel machining
- Cutting Direction: Right-hand cut
- Centre Cutting: Yes
- Tolerance: h5 shank tolerance
- Surface Finish: Precision ground cutting edges
- Application Type: Finishing and semi-finishing
- Coolant Use: Suitable for dry machining, air blast, or coolant applications
- Machine Compatibility: CNC machining centres, milling machines, and high-speed machining equipment
Features
- Optimized for hardened steels up to 65 HRC
- Superior wear resistance for extended tool life
- High heat resistance for demanding cutting conditions
- Reduced vibration and improved stability
- Excellent surface finish quality
- Precision-ground geometry for improved accuracy
- Suitable for high-speed and high-feed machining strategies
- Reliable performance in continuous production environments
Suitable Materials
- Hardened Tool Steel (Up to 65 HRC)
- H13 Tool Steel
- D2 Tool Steel
- SKD11
- Die and Mould Steels
- Heat-Treated Alloy Steels
- Bearing Steels
- Pre-Hardened Steels
- High-Hardness Carbon Steels
Applications
- Mould and Die Manufacturing
- Precision Engineering
- Aerospace Components
- Automotive Components
- Tool and Fixture Production
- High-Precision Finishing Operations
- Contour Milling and Profiling
- Side Milling and Pocketing
The Stiger 4 Flute Carbide End Mill for Steel 65 HRC is designed for machinists who require maximum performance, reliability, and tool life when machining hardened materials. Its combination of premium carbide substrate, advanced coating technology, and precision-ground geometry makes it an ideal choice for achieving exceptional productivity and surface finish quality in high-hardness applications.
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