Aluminum alloy sheet with excellent formability and method for m

Details Aluminum alloy sheet with excellent formability and method for m Aluminum alloy sheet with excellent formability and method for m

1997-01-10

1999-08-31

Ryan, Patrick

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148246, 420544, 420543, 420542, 420553, 420535, C23C 0000

Patent

active

059449233

ABSTRACT:
The invention provides an aluminum alloy sheet that has excellent formability, high coat-baking hardenability, and ensures a proof stress of 200 MPa or more after the coat-baking stage, and that gives favorable product surface quality after the forming stage and excellent corrosion resistance, and that is particularly suitable for external automobile body plates. The aluminum alloy sheet comprises: 0.9 to 1.3 wt. % of Si, 0.4 to 0.6 wt. % of Mg, 0.05 to 0.15 wt. % of Mn, 0.01 to 0.1 wt. % of Ti, with the remainder comprising Al and inevitable impurities, while limiting Fe as an impurity to 0.2 wt. % or less and Cu as an impurity to 0.1 wt. % or less; a coating film of a lubricant composition containing a water-dispersible polyurethane resin and a natural wax on the aluminum alloy sheet.

REFERENCES:
patent: 5399192 (1995-03-01), Yamasoe

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