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a3材料是什么材质
更新时间: 2020-12-02 15:39:34  

是甲类的普通碳素结构钢。它是老牌号,新牌号是Q235-A。a3钢的硬度为HRC40-44。这类钢会包含一定的化学成份,含磷、硫等杂质,它的含碳量在0.2%左右,相当于20号纲。这类钢在现实中使用最广泛,由于其含碳量适中,在强度、焊接性和可塑性能等方面起到了很好的辅助作用,从综合性能上来说较为优秀。

关键词: a3 材料 什么 材质

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