Aluminum alloy for use as core of clad material

Details Aluminum alloy for use as core of clad material Aluminum alloy for use as core of clad material

1987-02-03

1988-08-02

Dean, R.

Alloys or metallic compositions

Aluminum base

Copper containing

148438, 148439, 420533, 420535, 420537, 420538, C22C 2112

Patent

active

047612673

ABSTRACT:
An aluminum alloy-core material for brazing, having improved secular corrosion resistance is provided, by a composition of 0.5.about.1.0% of Cu, 0.5.about.1.0% of Mn, 0.10.about.0.30% of Ti, 0.3% or less of Fe, less than 0.10% of Si, and balance of Al, and contains, occasionally at least one element selected from the group consisting of from 0.05 to 0.4% of Mg, from 0.05 to 0.4% of Cr, and from 0.05 to 0.4% of Zr. The alloy is free of an Al-Fe intermetallic compound, has an improved resistance to pitting corrosion and exhibits only a slight reduction in mechanical strength after brazing.

REFERENCES:
patent: 4039298 (1977-08-01), Anthony et al.
patent: 4167410 (1979-09-01), Anthony et al.

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