Nickel base brazing alloy

Details Nickel base brazing alloy Nickel base brazing alloy

1977-10-17

1979-01-23

Smith, Al Lawrence

Metal fusion bonding

Process

Critical work component, temperature, or pressure

B23K 104, B23K 3530

Patent

active

041356560

ABSTRACT:
A nickel base, relatively low temperature brazing alloy, particularly suitable for brazing, carbon and low alloy steels, nickel base alloys, copper alloys and stainless steels, (including thin sections, eg. honeycomb) in dry-hydrogen or inert atmospheres partial-pressure or high vacuums. The brazing alloy is also suitable for brazing in "wet" endothermic and dissociated ammonia atmospheres. The brazing alloy consists essentially of, by weight, about 19 to 23 percent manganese, 5 to 8 percent silicon, 4 to 6 percent copper, 0.6 to 1.8 per cent boron, 0.01 to 0.2 percent rare earth, preferably mischmetal, additions of up to three percent tantalum, molybdenum, columbium, tungsten and aluminum, under 0.3 percent carbon and the balance nickel. The brazing alloys of this invention will braze below 1850 F, permit multiple braze cycles without remelting and provide joint service temperature to 1700 F.

REFERENCES:
patent: 2844867 (1958-07-01), Wernz et al.
patent: 2856281 (1958-10-01), Cremer et al.
patent: 3222164 (1965-12-01), Pugh
patent: 3717442 (1973-02-01), Knopp

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