Brazing alloy filler for joining cemented carbide to steel

Details Brazing alloy filler for joining cemented carbide to steel Brazing alloy filler for joining cemented carbide to steel

1981-04-02

1982-11-02

Skiff, Peter K.

Alloys or metallic compositions

Copper base

Nickel containing

420489, 420493, C22C 905

Patent

active

043572995

ABSTRACT:
A copper base brazing alloy consisting of, in percent by weight, 25 to 40 manganese, 0 to 10 nickel, 0 to 10 iron, 0 to 6 indium and 0 to 10 tin with the combination of tin and indium being not less than 2, and the balance essentially copper, is suitable for brazing cemented carbide to steel in a temperature range 815.degree.-900.degree. C. (1500.degree.-1650.degree. F.). The brazing temperature of these filler alloys are at least 100.degree. F. lower than those of non-precious brazing filler alloys of the prior art used for this application and are considerably less expensive than prior art precious metal brazing alloys currently being used. The resulting cemented carbide to steel joints have high shear strength and good ductility.

REFERENCES:
patent: 3091527 (1963-05-01), Pollock
patent: 3198609 (1965-08-01), Cape
patent: 3928029 (1975-12-01), Fisk et al.
patent: 3948432 (1976-04-01), Pryor et al.
patent: 4071358 (1978-01-01), Kawakatsu

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