← Steels
Stainless steel
M390MK
Bohler's current production version of M390, which Microtech now specifies. Same chemistry class and the same trade: long edge life and high corrosion resistance, slow on a stone.
- Typical hardness
- 60-62 HRC
- Edge retention
- 5/5
- Toughness
- 2/5
- Corrosion resistance
- 5/5
- Ease of sharpening
- 2/5
1-5 is a relative ranking drawn from published composition and hardness, not a lab measurement. Higher is better on every axis, and no steel is a 5 across the board — edge retention and toughness pull against each other.
The knife in M390MK