Wrought material of aluminum alloy to be anodized gray and proce

Details Wrought material of aluminum alloy to be anodized gray and proce Wrought material of aluminum alloy to be anodized gray and proce

1987-11-18

1989-06-06

Dean, R.

Metal treatment

Compositions

Heat treating

148 115A, 148440, C22F 104

Patent

active

048368636

ABSTRACT:
Herein disclosed are the ingredient and composition of a wrought material of an aluminum alloy to be anodized into a dense gray color for facing buildings, and a process for making the wrought aluminum alloy material. This material consists essentially of 0.4 to 1.0% of Fe, 0.05 to 0.25% of Si, 0.3 to 1.5% of Mg, 0.05 to 0.7% of Mn (<Fe in percentage), 0.10% or less of Ti, and 0.003% of B, if necessary, in weight ratio, the remainder being Al and irreversible impurities. According to the process for making the wrought material, an alloy having the above-specified ingredient and composition is direct chill cast, and the cast ingot is heated at 350.degree. to 580.degree. C. for 0.5 to 12 hours and is then hot worked.

REFERENCES:
patent: 3397044 (1968-08-01), Bylund
Chemical Abstracts, 88(4): 29434x.

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