Copper clad aluminum composite wire

Details Copper clad aluminum composite wire Copper clad aluminum composite wire

1992-06-01

1993-06-29

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428931, B32B 1520

Patent

active

052233499

ABSTRACT:
A copper-clad aluminum composite wire has a core that is made of an Al-Mg alloy and circumferentially clad with copper or a copper alloy. The aluminum alloy is composed of 1.5 to 10.0 percent by weight of Mg, additives such as Cr and Mn, ordinary impurities, and aluminum whose content is such as to form the rest of the alloy composition. The copper or the copper alloy forms 20 to 40% of the cross-sectional area of the copper-clad aluminum composite wire. Such core material is drawn to reduce the cross-sectional area by 20% or more using a die whose half angle .alpha. is from 15 to 30 degrees to obtain an cladding wire; the cladding wire is further drawn to reduce the cross-sectional area by 70% or more using a drawing die whose half angle .alpha. is from 4 to 15 degrees at least once; and the thus drawn wire is subjected to annealing at temperatures from 200.degree. to 400.degree. C. for from one minute to 24 hours.

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Standard Specification for Copper-Clad Aluminum Wire, ASTM, B 566-72, Apr. 1988, pp. 1-4.

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