| 摘要 |
As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass%, Si: 0.05-1.5 mass%, Mn: 10.0-22.0 mass%, S: not more than 0.03 mass%, Ni: 4.0-12.0 mass%, Cr: 14.0-25.0 mass% and N: 0.07-0.17 mass%, provided that these components are contained so that ´ cal (mass%) represented by the following equation (1) is not more than 5.5 mass%: ´cal mass % = Cr + 0.48 �¢ Si + 1.21 �¢ Mo + 2.2 �¢ V + Ti + 0.15 �¢ Nb - Ni + 0.47 �¢ Cu + 0.11 �¢ Mn - 0.010 �¢ Mn 2 + 26.4 �¢ C + 20.4 �¢ N - 4.7
and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m. |
