COLD ROLLED AND CONTINUOUSLY ANNEALED HIGH STRENGTH STEEL STRIP AND METHOD FOR PRODUCING SAID STEEL
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Feb 22, 2008
filing date -
Feb 23, 2007
priority date (Note) -
Abandoned
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Abstract
Cold rolled and continuously annealed high strength steel strip including (in wt %): 0.04-0.30% C, 1.0-3.5% Mn, 0-1.0% Si, 0-2.0% Al, 0-1.0% Cr, 0-0.02% P, 0-0.01% S, 0-0.25% V, 0-0.1% Nb, 0-0.20% Ti, 0-0.015% N, 0-0.010% B, unavoidable impurities, balance iron, provided with a hot dip galvanized or galvannealed zinc alloy coating layer, wherein the zinc alloy is 0.3-4.0% Mg and 0.05-6.0% Al; optionally at most 0.2% of one or more additional elements; unavoidable impurities; the remainder being zinc, and method for producing it.
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