Method for steel strip coating and a steel strip provided with said coating
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United States of America Patent
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Feb 22, 2011
Grant Date -
Nov 6, 2008
app pub date -
Feb 1, 2006
filing date -
Feb 24, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Coating steel strips comprising, in % by weight, C: ≦1.6%, Mn: 6-30%, Al: ≦10%, Ni: ≦10%, Cr: ≦10%, Si: ≦8%, Cu: ≦3%, Nb: ≦0.6%, Ti: ≦0.3%, V: ≦0.3%, P: ≦0.1%, B: ≦0.01%, the rest being iron and unavoidable impurities, and a method of forming steel strips are described. Up to now, such steel strips were not adequately coatable, with a metal coating ensuring outstanding corrosion-resistance and good welding properties. This is ensured by applying an aluminium layer to the steel strip before final annealing and applying the metal coating to said aluminium layer after final annealing.
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