发明授权
US08784577B2 Thick high-tensile-strength hot-rolled steel sheet having excellent low-temperature toughness and manufacturing method thereof 有权
具有优异的低温韧性的厚的高强度热轧钢板及其制造方法

Thick high-tensile-strength hot-rolled steel sheet having excellent low-temperature toughness and manufacturing method thereof
摘要:
A high-tensile-strength hot-rolled steel sheet is provided having a composition which contains 0.02 to 0.08% C, 0.01 to 0.10% Nb, 0.001 to 0.05% Ti and Fe and unavoidable impurities as a balance, wherein the steel sheet contains C, Ti and Nb in such a manner that (Ti+(Nb/2))/C
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