General Electric Company

David M Parker

James R Pedersen

Robert G Trechel

A copper alloy welding filler for use in arc welding copper to produce sound welds with good mechanical strength and high electrical conductivity is disclosed. The filler consists essentially of a zirconium-boron copper alloy filler metal wherein the concentration ratio of zirconium to boron is at least about 4 to 1; the minimum concentration of boron is about 300 PPM; and the concentration of zirconium is a maximum of about 6000 PPM. The minimum level of about 300 PPM boron on a weight basis eliminates porosity in the weld; while zirconium below about 6000 PPM is effective to eliminate weld cracking without having a detrimental effect on the electrical conductivity.

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Schenectady, NY, United States of America

David M Parker