Austenitic stainless steel combining strength and resistance...

Details Austenitic stainless steel combining strength and resistance... Austenitic stainless steel combining strength and resistance...

C - Chemistry, Metallurgy

22

C

75/120

C22C 38/58 (2006.01) E21B 17/16 (2006.01)

Patent

CA 1336864

A nonmagnetic austenitic stainless steel and articles such as drill collars or boat shafts fabricated therefrom, the steel having a .2% yield strength of at least 100 ksi (689 N/mm2), improved reststance to inter- granular stress corrosion, good ductility, good corrosion resistance and low magnetic permeability, and consisting essentially of, in weight percent, from greater than 0.05% to about 0.10% carbon, greater than 14% to about 18% manganese, about 15% to about 20% chromium, about 1% to about 3.5% nickel, about 0.3% to about 0.55% nitrogen, about 0.10% to about 0.5% vanadium, about 1.0% maximum copper, about 1.0% maximum molybdenum, about 1.0% maximum silicon, about 0.04% maximum phosphorus, about 0.03% maximum sulfur, and balance essentially iron.

556865

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