PRODUCTION PROCESS OF FINE-GRAINED AUSTENITIC STAINLESS STEEL

広田 憲亮; 武内 伴照; 中野 寛子

菊池 淳*

A process of producing a fine-grained austenitic stainless steel, said process comprising a step of subjecting a fine-grained austenitic stainless steel comprising: C: 0.15 wt % or less, Si: 1.00 wt % or less, Mn: 2.0 wt % or less, Ni: 6.0 to 14.0 wt %, Cr: 16.0 to 22.0 wt %, and Mo: 3.0 wt % or less, with the balance being Fe and inevitable impurities, and having an average grain size of 10 μm or lower, to an annealing treatment at a temperature from 600° C. to 700° C. for 48 hours or longer.