O2 (Werkstoff 1.2842) is a decent performer in light/medium use knives with a working hardness of 63-65HRc.
 
Chemical Composition:-
 
  
   | C: | Cr: | Mn: | V: | Mo: | 
  
   | 0.9% | 0.4% | 2% | 0.15% | 0.4 | 
 
 
 
Suggested Heat Treatments:
Heat to 800C Hold for 10 minutes
Oil Quench (Suggested Oil is Rye 32) 
Temper twice for two hours at 200C for 63HRc
 
Supplied in 500mm Lengths – Surface Ground Annealed