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发明公开
CN109023050A 一种390MPa级高强度IF钢及其生产方法 有权 转让

一种390MPa级高强度IF钢及其生产方法
摘要：
本发明属于钢铁制造技术领域，尤其涉及一种390MPa级高强度IF钢，包括以下化学成分及重量百分比为：C：0.0～0.004％、Si：0.0～0.030％、Mn：0.4％～0.6％、P：0.06％～0.085％、S：0.0～0.010％、Al：0.03％～0.1％、Nb：0.01％～0.1％、B：0.00050％～0.0012％，余量为铁及不可避免的杂质。本发明的高强度IF钢能够避免钢的FeTiP析出物的大量析出阻碍有利织构的发展，从而提高塑性应变比r值。
摘要（英）：

The invention belongs to the technical field of iron and steel manufacturing and particularly relates to 390MPa-grade high-strength IF steel. The 390MPa-grade high-strength IF steel comprises the following chemical components of, by weight, 0.0-0.004% of C, 0.0-0.030% of Si, 0.4-0.6% of Mn, 0.06-0.085% of P, 0.0-0.010% of S, 0.03-0.1% of Al, 0.01-0.1% of Nb, 0.00050-0.0012% of B, and the balance Fe and inevitable impurities. By means of the high-strength IF steel, the situation that development of a favorable texture is hindered as a large quantity of FeTiP precipitates of steel are separatedout can be avoided, and thus the value of the plastic strain ratio r is increased.

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