Stock material or miscellaneous articles – Composite – Of metal
Patent
1995-08-16
1997-10-07
Zimmerman, John
Stock material or miscellaneous articles
Composite
Of metal
428457, 428472, B32B 1508, B32B 1520
Patent
active
056746270
ABSTRACT:
An aluminum alloy sheet combining excellent press formability and spot weldability is disclosed. A chromate film of about 1.0 to 50.0 mg/m.sup.2 expressed in terms of metallic chromium is formed as a first layer on an aluminum alloy sheet, and an organic resin film containing about 60-95% by weight of organic lubricant and having a thickness of 0.02 to 0.90 .mu.m in terms of dry thickness is formed as a second layer on the chromate film. As the organic lubricant, a high-density polyethylene having a mean molecular weight of about 900 to 15,000 and a density of about 0.93 g/ml or more is preferable. This aluminum alloy sheet can be effectively used for automobile body applications.
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Hashiguchi Koichi
Ikeda Rinsei
Kurihara Masa-aki
Matsumoto Yoshihiro
Nabae Motohiro
Kawasaki Steel Corporation
Miller Austin R.
The Furukawa Electric Co. Ltd.
Zimmerman John
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