Zinc-maganese alloy coated steel sheet
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United States of America Patent
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-
Aug 27, 1991
Grant Date -
N/A
app pub date -
May 11, 1990
filing date -
May 11, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a multi-layered zinc-manganese alloy coating electrodeposited on sheet steel. The alloy layer closest to the surface of the sheet steel has a composition of at least 50% manganese while the composition of the other alloy layers farther removed from the surface of the sheet steel have less than 50% manganese.
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