Patent ID: 8808472

Claim:
A steel alloy, consisting essentially of, in weight-%: 0.06-0.14 C, 0.08-0.12 N, 0.18≦C+N≦0.26, 0.1-1.0 Si, 0.1-2.0 Mn, 13.1-13.7 Cr, 1.5-1.7 Ni, 0.4-0.6 Mo, max. 0.7 V, 0.035-0.15 S, and balance iron and unavoidable impurities, wherein, after hardening and tempering, the steel alloy has a substantially martensitic matrix, wherein, after hardening and tempering, the steel alloy is essentially void of ferrite, and wherein, after hardening and tempering, the steel alloy is essentially void of spots having a hardness substantially higher than a hardness of the martensitic matrix.