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qste420tm是什么材质
更新时间: 2020-12-07 13:41:56  

是冷成型热轧汽车结构钢板。qste420tm只是钢号,而它也称之为冷成型热轧汽车结构钢板,属于细晶粒钢,主要化学成分有硅的含量为不高于0.35,锰的成分不高于1.50,磷的成分不高于0.03,硫的成分不高于0.025,钛不高于0.22,铌的成分不高于0.09,铝的成分不低于0.01,钛的成分不高于0.20,具有很好的冷成型,主要适用于高强度的汽车大梁及横梁结构件,同时它的力学性能也是很不错的,它的抗拉强度在480-620之间,它的屈服强度不低于420,伸长率大于16。

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