Heat Treatment Specifications
Austenitizing
Temperature1050°C(1922°F)
Soak Time20 minutes
Tempering
Temperature350°C(662°F)
Time120 minutes
Cycles2x
Quench Medium
oil
Target Hardness
62 - 64 HRC
Performance Characteristics
Toughness6/10
Edge Retention6.5/10
Corrosion Resistance4/10
Ease of Sharpening5.5/10
Overall Score22/40
Interesting Facts
- 1Old GOST name for 40KH10S2M heat-resistant steel
- 2Originally for aircraft engine valves and diesel fasteners
- 3Despite low carbon (~0.4%), reaches 57-62 HRC
- 4Excellent combination of hardness and toughness for impact loads
- 5NOT equivalent to ELMAX - completely different steel type
Famous Uses
Baranov throwing knives
Russian machetes
High-impact blades
Best For
Heat-resistant applications
Industrial cutting
Kitchen knives
Similar Steels
Not Recommended For
- Wet environments
- Western markets
- Beginners
Expert Tips
- 1High silicon for heat resistance
- 2Good balance of properties
- 3Moderate corrosion resistance