Method of welding austenitic steel to ferritic steel with filler

Details Method of welding austenitic steel to ferritic steel with filler Method of welding austenitic steel to ferritic steel with filler

1986-05-12

1987-11-03

Andrews, Melvyn J.

Metal fusion bonding

Process

Critical work component, temperature, or pressure

420584, 420453, 420 67, C22C 3844, C22C 1903

Patent

active

047038853

ABSTRACT:
An austentic steel component is fused to a ferritic steel component with a filler alloy specifically formulated to have a thermal coefficient of expansion similar to that of the ferritic steel, a creep rate intermediate between that of the ferritic and austenitic steels, a rupture strength at least as great as that of the ferritic steel, and a carbon activity intermediate that of the ferritic and austenitic steels. Suitable filler alloys have the following general compositions: (1) 1-3% nickel, 11-13% chromium, 1.6-2.0% molybdenum, 0.07-0.1% carbon, 0.5-0.9% manganese and 0-1.5% tungsten, balance iron, and (2) 41-56% nickel, 3.5-10.0% chromium, 1.6-2.5% molybdenum, 0.03-0.1% carbon and 0.5-2.0% manganese, balance iron.

REFERENCES:
patent: 537006 (1957-02-01), Carpenter
patent: 2769227 (1956-11-01), Sykes et al.
patent: 2963129 (1960-12-01), Eberle
patent: 3052016 (1962-09-01), Zimmer
patent: 3179790 (1973-03-01), Plockinger et al.
patent: 4149063 (1979-04-01), Bishel

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