Patent ID: 8025839

Claim:
A steel material, powder metallurgically manufactured, with a chemical composition comprising, in % by weight: 0.01-2 C 0.01-3.0 Si 0.01-10.0 Mn 16-30 Cr 0.01-5 Ni 0.01-5.0 (Mo+W/2) 0.01-9 Co max. 0.5 S 0.6-10 N 0.5-14 (V+Nb/2), max. 7 of (Ti+Zr+Al), balance essentially only iron and impurities at normal amounts, wherein N and (V+Nb/2) are balanced in relation to each other such that the contents of these elements are within an area that is defined by the coordinates F′″, G, H, I′″, F′″ in the system of coordinates in FIG. 1 , where the coordinates of [N, (V+Nb/2)] for F″, G, H, I′″ are: F′″: [8.0,11.0] G: [9.8,14.0] H: [2.6,14.0] and I′″: [2.1,11.0].