SUPER NON-MAGNETIC SOFT STAINLESS STEEL WIRE MATERIAL HAVING EXCELLENT COLD WORKABILITY AND CORROSION RESISTANCE, METHOD FOR MANUFACTURING SAME, STEEL WIRE, STEEL WIRE COIL, AND METHOD FOR MANUFACTURING SAME

摘要

This superfine nonmagnetic soft stainless steel wire material includes, (mass percent), 0.08% or less C, 0.05 to 2.0% Si, more than 8.0% to 25.0% Mn, 0.06% or less P, 0.01% or less S, more than 6.0% to 30.0% Ni, 13.0% to 25.0% Cr, 0.2% to 5.0% copper, N's is less than 0.20%, 0.002% to 1.5% Al in the case where C+N is less than 0.20%, the remainder being configured by Fe and inevitable impurity, and the Md30 indicated by the following expression (a) equal to or less than -150. Md30=413-462 (C+N) -9.2Si-8.1Mn-9.5Ni-13.7Cr-29Cu...(a)