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a3钢板是什么材质
更新时间： 2020-12-08 10:05:25  

指的是一种碳素钢。该材质的所包含的碳较少，是甲类的碳素结构钢。a3属于老牌号，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，且其含磷、硫等杂质，它的含碳量在0.2%左右，相当于20号钢。由于其含碳量适中，且其强度较大、焊接性能良好、可塑性较强，可以很好的发挥其辅助作用。因此，从综合性能上来说该材质较为优秀，也因此这类钢材在现实中使用最广泛。

关键词： a3 钢板 什么 材质

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