| 简介 |
A soft stainless steel sheet excellent in workability and cold-forgeability, has an austenite-stability index (Md30) of -120 to -10 and stacking fault formability index (SFI) of >=30, each defined by preset relations, and copper concentration of precipitates of not more than 1.0 mass% so as to maintain copper content dissolved in a matrix at 1.0-4.0 mass%. A soft stainless steel sheet excellent in workability and cold-forgeability, has an austenite-stability index (Md30) of -120 to -10 defined by the relation : Md30([deg]C) = 551-462(C+N)-9.2Si-8.1Mn-29(Ni+Cu)-13.7Cr-18.5Mo, a stacking fault formability index (SFI) of >=30 defined by the relation : SFI (mJ/cm2>) = 2.3Ni+6Cu-1.1Cr-13Si-1.2Mn+32, and copper concentration of precipitates of not more than 1.0 mass% so as to maintain copper content dissolved in a matrix at 1.0-4.0 mass%. |
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