Very high mechanical strength steel and method for making a sheet thereof coated with zinc or zinc alloy
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United States of America Patent
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Jul 12, 2011
Grant Date -
May 18, 2006
app pub date -
Sep 4, 2003
filing date -
Sep 6, 2002
priority date (Note) -
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Abstract
The invention concerns a very high mechanical strength steel, whereof the chemical composition comprises in wt. %: 0.006%=C=0250%; 0.400%=Mn=0.950%; Si=0.300%; Cr=0.300%; 0.100%=Mo=0.500%; 0.020%=AI=0.100%; P=0.100%; B=0.010%; Ti=0.050%, the rest being iron and impurities resulting from preparation. The invention also concerns a method for making a sheet of said steel coated with zinc or zinc alloy.
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