Method for manufacturing high strength non-magnetic stainless st

Details Method for manufacturing high strength non-magnetic stainless st Method for manufacturing high strength non-magnetic stainless st

1989-07-05

1991-04-23

Yee, Deborah

Metal treatment

Compositions

Heat treating

72274, 72700, C21D 800

Patent

active

050097237

ABSTRACT:
A high strength non-magnetic stainless steel comprising, by weight ratio, less than 0.20% C, less than 1.00% Si, 14-16% Mn, less than 0.005% S, 0.2-1.0% Ni, 15-19% Cr, 0.30-0.40% N, and Fe and other impurity elements, of which C+N constitutes 0.40-0.55% and the Mn equivalent equals 30-33. The stainless steel has a hardness more than Hv 500, a magnetic permeability less than 1.01 after drawing, the steel may be suitably used as the steel for the micro shafts of video tape recorders and electromagnetic valves.

REFERENCES:
patent: 3151979 (1964-10-01), Carney et al.
patent: 4493733 (1985-01-01), Yamamoto et al.

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