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内六角圆柱头螺钉12.9级和10.9级有什么区别

内六角圆柱头螺钉12.9级和10.9级有什么区别

钢结构连接用螺栓性能等级分3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9等10余个等级,其中8.8级及以上螺栓材质为低碳合金钢或中碳钢并经热处理(淬火、回火),通称为高强度螺栓,其余通称为普通螺栓。螺栓性能等级标号有两部分数字组成,分别表示螺栓材料的公称抗拉强度值和屈强比值。例如: 性能等级4.6级的螺栓,其含义是: 1、螺栓材质公称抗拉强度达400MPa级; 2、螺栓

2018-04-17

内六角圆柱头螺钉12.9级和10.9级有什么区别
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惠州市惠华昌五金制品有限公司

惠州市惠华昌五金制品有限公司是一家专业从事紧固件生产、研发、销售的专业紧固件制造商。是国内大型专业生产12.9级高强度螺丝制造商。

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