Austenitic stainless steel

摘要

New steel alloys which are both austenitic stainless having a Brinell hardness of 200-380. The new steel alloys consist essentially of the following components in the proportions indicated expressed in weight %: - Mo 3-6 - Cu 0.25-0.35 - Si max 1.5 - Mn max 1 - C 0.12-0.30 - Cr 12-22 - Ni 8-25 - Fe balance - with the proviso that the relative proportion between Mo and C is governed by the formula weight % Mo - (weight % Cx16)=from 1 to 2.5%. Optionally the new steel alloys may also contain Nb and Ta. The invention also concerns shaped objects made of any of the new steel alloys.