High strength non-magnetic stainless steel

Details High strength non-magnetic stainless steel High strength non-magnetic stainless steel

1989-07-05

1990-09-18

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 65, 420 73, 420 74, 148327, C22C 3858

Patent

active

049577000

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: 3904401 (1975-09-01), Mertz et al.
patent: 4450008 (1984-05-01), Andreini et al.
patent: 4481033 (1984-11-01), Fujiwara et al.
patent: 4721600 (1988-01-01), Maehara et al.
patent: 4851059 (1989-07-01), Sumitomo et al.
Lula et al., "Residual and Minor Elements in Stainless s teels," Metallurgy of Stainless Steel, pp. 14, 1, 6 and 7.

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