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a193b7是什么材质
更新时间: 2020-12-07 13:44:31  

高温用合金钢螺栓材料。a193b7中的a193是美国标准螺栓材料的标号,而b7指的是材料等级,a193b7指的就是高温用合金钢螺栓材料,与中国的42CrMoA很相似,主要是用在高温下的容力器、阀。a193b7的屈服度不低于723.45MPa,抗拉强度不低于861.25MPa,并且它的延伸率为16%,它的硬度最高值为HRC35,要知道螺栓根据其性能分为10个等级,3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9,其中8.8以上的就属于高强度螺栓了,属于低碳合金。

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