Heat Treatment Specifications
Austenitizing
Temperature1150°C(2102°F)
Soak Time5 minutes
Tempering
Temperature580°C(1076°F)
Time120 minutes
Cycles2x
Quench Medium
oil
Target Hardness
64 - 65 HRC
Performance Characteristics
Toughness7.5/10
Edge Retention7.5/10
Corrosion Resistance3/10
Ease of Sharpening5/10
Overall Score23/40
Interesting Facts
- 1Hitachi matrix high-speed steel - extreme toughness at 62-66 HRC
- 2Similar to M2 HSS but with better toughness
- 3Minimal primary carbides = no chipping even on dry maple
- 45% Mo, 1.1% W, 1.1% V - semi-stainless with 5% Cr
- 5Designed for forging tools requiring extreme toughness
- 6Rockstead's signature steel for premium knives
Famous Uses
Rockstead knives
Sukenari kitchen knives
High-end Japanese knives
Best For
High-end kitchen knives
Industrial cutting
Premium blades
Similar Steels
Not Recommended For
- Wet environments
- Budget
- Beginners
Expert Tips
- 1PM high-speed steel
- 2Excellent edge retention
- 3Not stainless
- 4Requires diamond stones