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发明公开
CN110129669A 一种汽车管状纵臂用钢及其制备方法和钢管及其制备方法 无效 - 驳回

一种汽车管状纵臂用钢及其制备方法和钢管及其制备方法
摘要：
本发明涉及一种汽车管状纵臂用钢及其制备方法和钢管及其制备方法，本发明提供的汽车管状纵臂用钢，按重量百分比计，所述钢的化学成分为：C:0.07-0.25％，Si≤0.3％，Mn:0.8-1.6％，P≤0.02％、S≤0.006％，Nb:0.01-0.04％，Ti:0.01-0.04％，V:0.01-0.04％，其余是Fe及不可避免杂质；所述钢金相组织为铁素体+珠光体。
摘要（英）：

The invention relates to steel for a tubular longitudinal arm of an automobile and a preparation method thereof, and a steel pipe and a preparation method thereof. The steel for the tubular longitudinal arm of the automobile comprises the following chemical components in percentage by weight: 0.07%-0.25% of C, not greater than 0.3% of Si, 0.8%-1.6% of Mn, not greater than 0.02% of P, not greater than 0.006% of S, 0.01%-0.04% of Nb, 0.01%-0.04% of Ti, 0.01%-0.04% of V, and the balance Fe and inevitable impurities, wherein the metallographic structure of steel is ferrite+pearlite.

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