Title: Galling resistant austenitic stainless steel

Abstract: An austenitic stainless steel having excellent galling resistance by reason of a silicon-containing surface oxide film and a high work hardening rate, good wear resistance, good corrosion resistance in chloride-containing environmets, and excellent oxidation resistance, containing 10% to 25% chromium, 3% to 15% nickel, 6% to 16% manganese, 2% to 7% silicon, 0.001% to 0.25% carbon, 0.001% to 0.4% nitrogen, and balance iron except for incidental impurities. Up to 4% molybdenum, up to 4% copper, 0.09% maximum phosphorus, up to 0.25% maximum sulfur and up to 0.50% maximum selenium may be present. The steel is readily workable on ordinary equipment into plate, sheet, strip, bar, rod and like wrought products.

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Inventors: Schumacher, William J. (Baltimore, MD, US)
Tanczyn, Harry (Baltimore, MD, US)

Application Number: 552357
Filing Date: 1975-02-24
Publication_date: 1977-08-02
Assignee:
Primary Class(es): 428/450 148/279
Other Classes:
US Patent Ref:

2177454	Oct, 1939	Frevert et al.	75/128.
2484903	Oct, 1949	Payson	75/128.
2687955	Aug, 1954	Bloom	75/128.
2820708	Jan, 1958	Waxweiler	75/128.
3152934	Oct, 1964	Lula et al.	75/128.
3615368	Oct, 1971	Baumel	75/128.
3726668	Apr, 1973	Baumel	75/128.
3806337	Apr, 1974	Jones	75/128.
3912503	Oct, 1975	Schumacher et al.	75/125.

Other Refs: 1,950,9321,202,479

Feb, 1971	DT
Aug, 1970	UK

Primary Examiner: Satterfield, Walter R.
Assistant Examiner:
Attorney: