| 摘要 |
A precipitation hardening stainless steel, which is excellent in cold workability at a solution treated state and good in proof stress after overaging treatment, consists essentially of C</=0.010, Ni 0.010 DIFFERENCE 0.025% (provided C+N</=0.025%), Si</=1.0%, Mn</=1.2%, P</=0.040%, S</=0.030%, Cu: 3.0 DIFFERENCE 5.0%, Ni: 3.0 DIFFERENCE 4.65%, Cr: 13.0 DIFFERENCE 16.5%, Mo</=1.0%, Nb: (-11.43 (C+N)+0.6) DIFFERENCE 0.5% and the balance Fe on condition that452 (C+N)+11.1 (Ni+Mn)</=73.1.
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