Italy · UNI
PSL2 Grade L555ME
UNI EN ISO 3183
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| 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 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel tubes, thermomechanically rolled , 25 < t <= 40mm, t | 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 |