| 摘要 |
Provided is a high-strength stainless steel material having less deterioration in mechanical strength and improved workability, particularly bending workability compared with conventional steel materials. The high-strength stainless steel material of the present invention has a specific composition, has a metal microstructure composed of two phases, that is a ferrite phase and a martensite phase, has a ³max of from 50 to 85, the ³ max being represented by the following equation (1): ³ max =420W c +470W N +23W Ni +7W Mn -11.5W Cr -11.5W Si +189 (1) wherein, W c , W N , W Ni , W Mn , W Cr , and W Si represent contents (unit: mass%) of C, N, Ni, Mn, Cr, and Si relative to the total mass of the stainless steel material, respectively; and has a difference of 300 HV or less in hardness between the ferrite phase and the martensite phase. |
