面内異方性が小さいフェライト・オーステナイト２相ステンレス鋼板およびその製造方法

摘要

This ferrite austenite 2-phase stainless steel plate comprises, by mass%, C: 0.001-0.10%, Si: 0.01-1.0%, Mn: 2-10%, P < 0.05%, Ni: 0.1-3.0%, Cr: 15.0-30.0%, and N: 0.05-0.30%, with the remainder being Fe and inevitable impurities. The austenite phase percentage is 40-90% by surface area percentage, the maximum strength of the crystal orientation of the ferrite phase is 10 or less, and the hardness ratio of the austenite phase to the ferrite phase is 1.1 or greater.