| 摘要 |
PURPOSE: To produce a high strength stainless steel sheet most suitable for automobile engine gasket and excellent in stress corrosion cracking resistance. CONSTITUTION: A plating layer, composed essentially of aluminum, is formed by 0.1-20μm on the surface of a stainless steel sheet which has a composition containing, by weight, <=0.2% C, <=5% Si, <=10% Mn, 12-20% Cr, 5-10% Ni, and <=0.2% N and having -50 to 100-Md value computed from the components and in which martensitic phase is regulated to >=20% by volume ratio by means of cold rolling at >=10% following the application of plating composed essentially of aluminum to the surface of the steel sheet after final annealing and also Vickers hardness is regulated to 400-600. This steel sheet has excellent stress corrosion cracking resistance in a salt water environment and also has high strength and superior workability and can be suitably used for gasket and spring.
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