| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonmagnetic austenitic stainless steel sheet having high elastic limit already at a stage of a finished firing material.SOLUTION: A high elastic limit nonmagnetic austenitic stainless steel sheet has a steel composition containing, by mass%, C: 0.12% or less, Si: 0.30 to 3.00%, Mn: 2.0 to 9.0%, Ni: 7.0 to 15.0%, Cr: 11.0 to 20.0%, N: 0.30% or less, and optionally, one or more of Mo: 3.0% or less, V: 1.0% or less, Nb: 1.0% or less, Ti: 1.0% or less, and B: 0.010% or less, with the Ni equivalent value of 19.0 or more, and a percentage of crystal particles having d(μm) of 0.45 or more and d(μm) of 0.32 or less is 20% or less as an area ratio, where a crystal particle diameter of an austenite crystal particle is represented as d (μm) and an average crystal particle diameter is represented as d(μm). |
