X2CrMoTi29-4 or 1.4592
C: 0.025% max Si: 1.00% max Mn: 1.00% max P: 0.030% max S: 0.010% max Cr: 28.0%-30.0% Mo: 3.50%-4.50% Ti: 4×(C+N)+0.15%-0.80% N: 0.045% max