锅炉管道附件承压铸钢件 技术条件、力学性能
钢 号 |
抗拉强度σb ≥ MPa |
屈 服 点σs ≥ MPa |
伸 长 率δ5 ≥ % |
断面收缩率ψ ≥ % |
冲击韧性αku ≥ J/cm2 |
ZG200-400 | 400 | 200 | 25 | — | — |
ZG230-450 | 450 | 230 | 22 | 32 | 44 |
ZG20CrMo | 461 | 245 | 18 | 30 | 29 |
ZG20CrMoV | 490 | 314 | 14 | 30 | 29 |
ZG15Cr1Mo1V | 490 | 343 | 14 | 30 | 29 |
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