Nitrogen strengthened FE-NI-CR alloy

Details Nitrogen strengthened FE-NI-CR alloy Nitrogen strengthened FE-NI-CR alloy

1989-07-26

1991-01-01

Yee, Deborah

Alloys or metallic compositions

Containing over 50 per cent metal but no base metal

Iron containing

420586, 4205861, 420 53, 420 51, 420 43, C22C 3850, C22C 3000

Patent

active

049816470

ABSTRACT:
A corrosion resistant metal alloy having improved formability and workability is disclosed which alloy contains in weight percent about 25% to 45% nickel, about 12% to 32% chromium, of at least one of 0.1% to 2.0% columbium, 0.2% to 4.0% tantalum, and 0.05% to 1.0% vanadium, up to about 0.20% carbon, about 0.05% to 0.50% nitrogen, about 0.001% to 0.02% boron and the balance being iron plus impurities and wherein the carbon and nitrogen content are controlled so that the amount of free carbon and nitrogen defined as ##EQU1## is greater than 0.14% and less than 0.29%. The alloy may also include in limited amounts one of aluminum, titanium, silicon, manganese, cobalt, molybdenum, tungsten, zirconium, yttrium, cerium and other rare earth metals.

REFERENCES:
patent: 4853185 (1989-08-01), Rothman et al.

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