HIGH STRENGTH - HIGH DUCTILITY COLD ROLLED RECOVERY ANNEALED STEEL AND PROCESS FOR MANUFACTURE THEREOF
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Jul 18, 2013
filing date -
Mar 15, 2013
priority date (Note) -
Abandoned
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Abstract
A high strength-high ductility cold rolled steel sheet is provided. The steel sheet has a recovery annealed microstructure, a yield strength greater than 820 megapascals (MPa) and a percent elongation to failure greater than 3.5%. In some instances, the steel alloy sheet has a Rockwell B hardness greater than 100 and may or may not exhibit a yield strength-to-tensile strength ratio between 0.25 and 1.00.
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