C: 0.030% max Si: 1.00% max Mn: 5.00%-7.00% P: 0.030% max S: 0.015% max Cr: 24.0%-26.0% Mo: 4.00%-5.00% Nb: 0.15% max Ni: 16.0%-19.0% N: 0.30%-0.60%