意大利 · UNI
PSL2 Grade L555ME
UNI EN ISO 3183 — Petroleum and natural gas industries-Steel pipes for pipeline transportation systems(ISO 3183:2012)
化学成分
| 元素 | min | max | 相似 | 备注 |
|---|---|---|---|---|
| Al | 0.015 | 0.06 | Al total | Al total |
| C | 0.12 | For each reduction of 0.01% below the specified max.concentration for C | For each reduction of 0.01% below the specified max.concentration for C | |
| CE Pcm | 0.25 | Product analysis C＜=0.12% | Product analysis C＜=0.12% | |
| CEV | 0.43 | Seamless pipe with t＞20.00mm | Seamless pipe with t＞20.00mm | |
| Cr | 0.3 | |||
| Cu | 0.25 | |||
| Mn | 1.8 | |||
| Mo | 0.1 | If agreed | If agreed | |
| N | 0.012 | Al/N＞=2:1 | Al/N＞=2:1 | |
| Nb | 0.07 | |||
| Ni | 0.3 | |||
| P | 0.025 | |||
| S | 0.015 | |||
| Si | 0.45 | |||
| Ti | 0.07 | |||
| V | 0.11 | |||
| V+Nb+Ti | 0.15 |
力学性能
| 热处理 / 状态 | 屈服强度 | 抗拉强度 | 伸长率 | 断面收缩率 | 冲击功 | 硬度 |
|---|---|---|---|---|---|---|
| 钢管 热机械轧制和热机械成型 25 ＜ t ＜= 40mm t-厚度 | 555–675 Rp0.5 | 625–825 Rt0.5/Rm ratio max.0.90 | ≥18 These values apply to trans.test pieces taken from the pipe body.when long.test pieces are tested |