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发明申请
US20070269678A1 High-tensile steel sheet, steel sheet joining process and high-strength automotive part 审中-公开
高强度钢板，钢板接合工艺和高强度汽车部件

High-tensile steel sheet, steel sheet joining process and high-strength automotive part
摘要：
There is provided a high-tensile steel sheet containing 0.15 to 0.25 mass % of C, 0.1 to 2.0 mass % of Si, 0.10 to 1.0 mass % of Mn, 0.5 to 3.5 mass % of Cr, 0.02 mass % or less of P, 0.01 mass % or less of S and the balance being Fe and unavoidable impurities based on the total mass of the steel sheet and satisfying a content ratio of Mn/(Mn+Cr)
摘要（中）：

提供了含有0.15〜0.25质量％的C，0.1〜2.0质量％的Si，0.10〜1.0质量％的Mn，0.5〜3.5质量％的Cr，0.02质量％以下的P的高强度钢板， 0.01质量％以下的S，余量为Fe和不可避免的杂质，基于钢板的总质量，满足Mn /（Mn + Cr）<0.50的含量比。

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