HT250

HT250的抗拉强度为250兆帕，但是GB9439中却规定灰铁的硬度标准有6种；那HT250应该用哪种硬度？

abcwl · 发表于 2024-12-30 00:51:57

求高手指教

abcwl · 发表于 2024-12-30 01:01:29

顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶顶

abcwl · 发表于 2024-12-30 01:10:48

顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

abcwl · 发表于 2024-12-30 01:16:26

顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

蓝天之士 · 发表于 2025-1-2 08:53:49

那是2种验收方式，试棒抗拉强度验收是常用的，如果想用硬度验收，仔细学习下GB/T 9439的附录A和B。

abcwl · 发表于 2025-1-2 12:51:03

能传一份GB/T 9439的资料给我么？

HT250

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