Coating composition for steel--product, a coated steel product, and a steel product coating method
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United States of America Patent
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Oct 22, 2002
Grant Date -
May 16, 2002
app pub date -
Oct 18, 2001
filing date -
Oct 7, 1999
priority date (Note) -
Expired
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Abstract
A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.
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