Aluminum alloy product with uniformly grey, light-fast surface a

Details Aluminum alloy product with uniformly grey, light-fast surface a Aluminum alloy product with uniformly grey, light-fast surface a

1987-05-12

1989-02-21

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 58, 420550, 428469, 4284722, C25D 1104, C25D 544, C22C 2100

Patent

active

048062111

ABSTRACT:
An anodized aluminum product prepared by anodizing an alloy comprising 1.20-1.60% iron and 0.25-0.55% manganese with a weight ratio of iron to manganese between 2.8 and 5, up to 0.20% silicon, up to 0.30% copper, up to 5% magnesium, up to 0.10% chromium, up to 2% zinc, up to 0.25% zirconium, up to 0.10% titanium, remainder aluminum and in total up to 0.50% of other by anodic oxidation in an electrolyte at a temperature of less than 560.degree. C. for no more than 4 hours so as to produce an oxide thickness of 5 to 30 .mu.m.

REFERENCES:
patent: 4672022 (1987-06-01), Reiss et al.

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