Austenitic stainless steel

Details Austenitic stainless steel Austenitic stainless steel

1982-10-26

1983-12-20

Lewis, Michael L.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75128B, 75128C, 75128G, 75128N, 148 38, C22C 3816, C22C 3820, C22C 3822, C22C 3842

Patent

active

044215576

ABSTRACT:
An austenitic stainless steel having good corrosion resistance, particularly in chloride environments; this is achieved by the use of a rare earth element, preferably lanthanum, singly or in combination with nitrogen, along with nickel and molybdenum at relatively low levels for an austenitic stainless steel. The composition includes 15 to 25% chromium, greater than 16 to 25% nickel, 3 to 7% molybdenum, with a rare earth element consisting of lanthanum within the range of 0.005 to 0.05% in combination with 0.1 to 0.5% nitrogen.

REFERENCES:
patent: 2553330 (1951-05-01), Post et al.
patent: 4078920 (1978-03-01), Liljas
patent: 4204862 (1980-05-01), Kodo et al.
patent: 4224062 (1980-09-01), Darnfors
patent: 4329173 (1982-05-01), Culling
patent: 4371394 (1983-02-01), Henthorne et al.

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