| 摘要 |
PURPOSE:To provide a nonmagnetic steel excellent in mechanical properties, which is obtained by adding to a steel specific quantities of austenization elements, grain refining elements and machinability improving elements. CONSTITUTION:The subject steel is a stable nonmagnetic steel of an austenite organization containing less than 1.5% of C, 0.1 to 1.5% of Si, 5 to 30% of Mn, 0.0005 to 0.5% of N, 0.05 to 1.0% of S, 0.05 to 1.0 % of Pb, 0.05 to 1.0% of Se, and 0.01 to 0.5 % of Te. To said steel there are added austenite phase stabilizing elements such as C, N and Mn, and S, Pb, Se, and Te. Alternately, further to said steel there are added austenite stabilizing elements such as Cr, Ni and the like, and yield strength improving elements such as P, V, Na, Ti, Zr, W, Al and the like. Upon this occasion, the following quantative relationship is caused to present between the austenite stabilizing elements. The value of (C+N) 100/9+2 (Mn) or (C+N) 100/9 (Mn+Cu+2Ni) is rendered more than 25%. |
