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阀门常用碳素钢材料的力学性能_阀门标准
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牌 号 |
抗拉强度 σb/MPa |
屈服强度 σ0.2/MPa |
延伸率 σ/% |
断面收缩率Ψ/% |
冲击吸引功AK/J |
硬度/HB |
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|
锻件 |
A105 |
≥485 |
≥250 |
≥22 |
≥30 |
-- |
≤187 |
|
|
25 |
≥450 |
≥275 |
≥23 |
≥50 |
71 |
≤170 |
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|
25Mn |
≥490 |
≥295 |
≥22 |
≥50 |
71 |
≤207 |
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|
铸件 |
WCA |
415-585 |
≥205 |
≥24 |
≥35 |
|
|
|
|
WCB |
485-655 |
≥250 |
≥22 |
≥35 |
|
|
||
|
WCC |
485-655 |
≥275 |
≥22 |
≥35 |
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