COLD ROLLED HIGH STRENGTH LOW ALLOY STEEL
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United States of America Patent
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Sep 28, 2017
app pub date -
Aug 24, 2015
filing date -
Aug 24, 2015
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Abstract
A high strength low alloy steel. The high strength low alloy steel strip, sheet or blank, coated with zinc or a zinc alloy, has the following composition in weight %:
- C: 0.03-0.07,Mn: 0.70-1.60,Si: ≦0.2,Al: 0.005-0.1,Cr: ≦0.1,Cu: ≦0.2,N: ≦0.008,P: ≦0.03,S: ≦0.025,O: ≦0.01,Ti: 0.02-0.07,V: 0.04-0.15Mo: ≦0.03,Nb: ≦0.03,Ca: ≦0.05,the remainder being iron and unavoidable impurities,wherein the steel strip, sheet or blank has a yield strength Rp0,2 of at least 420 MPa.
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