Copper and nitrogen containing austenitic stainless steel and fa

Details Copper and nitrogen containing austenitic stainless steel and fa Copper and nitrogen containing austenitic stainless steel and fa

1980-02-28

1981-10-20

Lewis, Michael L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Thread or shank structure

75125, 75128A, 75128G, 75128N, 75128T, 138177, 148 38, 148 39, C22C 3816, F16B 5306

Patent

active

042957699

ABSTRACT:
A low cost austenitic stainless steel having a high work hardening rate and good ductility if drastically cold reduced, consisting essentially of, in weight percent, 0.05% maximum carbon, 1.5% to 3.0% manganese, about 0.06% maximum phosphorus, about 0.035% maximum sulfur, about 1% maximum silicon, about 15% to about 20% chromium, 3% to 4.7% nickel, 1.75% to 3% copper, 0.10% to 0.30% nitrogen, up to about 0.3% columbium, titanium, tantalum or mixtures thereof, and balance essentially iron. The steel has particular utility in fabrication of cold headed fasteners.

REFERENCES:
patent: 3615365 (1971-10-01), McCunn
patent: 3615366 (1971-10-01), Allen

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