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发明公开
CN104313461A 汽车结构用冷轧钢板及其制造方法 无效 - 撤回

汽车结构用冷轧钢板及其制造方法
摘要：
本发明提供一种汽车结构用冷轧钢板及其制造方法。所述冷轧钢板的成分按重量百分比计为：C：0.04～0.10％，Si：≤0.12％，Mn：0.2～0.7％，P：≤0.025％，S：≤0.015％，Als：0.010～0.060％，余量为Fe和不可避免杂质，且其屈服强度为290～340MPa，抗拉强度为380～430MPa，断后伸长率≥33％。
摘要（英）：

The invention provides a cold-rolled steel plate for a car structure and a manufacturing method of the cold-rolled steel plate. The cold-rolled steel plate comprises the following components in percentage by weight: 0.04%-0.10% of C, not more than 0.12% of Si, 0.2%-0.7% of Mn, not more than 0.025% of P, not more than 0.015% of S, 0.010%-0.060% of Als and the balance of Fe and inevitable impurities. The cold-rolled steel plate has the yield strength of 290-340 MPa, the tensile strength of 380-430 MPa and the break elongation rate of not less than 33%.

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