Filler metal for welding aluminum alloys

C - Chemistry – Metallurgy – 22 – C

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C22C 21/00 (2006.01)

Patent

CA 1100338

ABSTRACT OF THE DISCLOSURE Filler metal for welding aluminum base alloys obtains improved resistance to stress corrosion cracking. The composition of the filler metal includes a copper addition which suppresses weld boundary corrosion. High weld strengths are attained using the said filler metal. The filler metal consists essentially of in weight %: zinc from 0.05 to 0.25%; magnesium up to 5.5%; copper from 0.2 to 0.5%; manganese from 0.05 to 2.5%; titanium from 0.1 to 0.25%: chromium from 0.05 to 0.3%; and the balance aluminum.

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