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通用阀门材料 PN 160-320双头螺柱_阀门标准
通用阀门材料 PN 160-320双头螺柱
| 钢 号 | σ b | σ s | δ | ψ | α k | HB | 备 注 |
| MPa | % | N·m/cm2 | |||||
| ≥ | |||||||
| 40 | 580 | 340 | 19 | 45 | 60 | 207～240 | JB/T 2773 |
| 40MnB | 900 | 750 | 15 | 80 | 250～302 | ||
| 35CrMoA | 800 | 600 | 50 | 214～286 | |||
| 40 | 568 | 333 | 19 | 45 | 49 | 187～229 | 中石化管道器材 |
| 35CrMo | 784 | 588 | 15 | 50 | 78.4 | 241～285 | |
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