标准：
API SPEC 5L、ISO 3183, GB/T 9711
用途：
用于石油、天然气工业中的气、水、油输送
机械性能：
标 准 | 钢 级 | 屈服强度(MPa) | 抗拉强度(MPa) | 延伸率(%) | 冲击功(J) |
API SPEC 5L |
| PSL1 |
| 查API SPEC 5L表3 |
|
A25/L175 | ≥172 | ≥310 | |||
A/L210 | ≥207 | ≥331 | |||
B/L245 | ≥241 | ≥414 | |||
X42/L290 | ≥290 | ≥414 | |||
X46/L320 | ≥317 | ≥434 | |||
X52/L360 | ≥359 | ≥455 | |||
X56/L390 | ≥386 | ≥490 | |||
X60/L415 | ≥414 | ≥517 | |||
X65/L450 | ≥448 | ≥531 | |||
X70/L485 | ≥483 | ≥565 | |||
PSL2 | |||||
| Min | Max | Min | Max | Min |
B/L245 | 241 | 448 | 441 | 758 | 41(27) |
X42/L290 | 290 | 496 | 414 | 758 | 41(27) |
X46/L320 | 317 | 524 | 434 | 758 | 41(27) |
X52/L360 | 359 | 531 | 455 | 758 | 41(27) |
X56/L390 | 386 | 544 | 490 | 758 | 41(27) |
X60/L415 | 414 | 565 | 517 | 758 | 41(27) |
X65/L450 | 448 | 600 | 531 | 758 | 41(27) |
X70/L485 | 483 | 621 | 565 | 758 | 41(27) |
X80/L555 | 552 | 690 | 621 | 827 | 101(68) |
化学成分：
标 准 | 钢 级 | C | Mn | P | S |
Max | Max | Min | Max | Max | |
API SPEC 5L | PSL1 | ||||
A25/L175 | 0.21 | 0.60 |
| 0.030 | 0.030 |
A25P/L175P | 0.21 | 0.60 | 0.45 | 0.080 | 0.030 |
A/L210 | 0.22 | 0.90 |
| 0.030 | 0.030 |
B/L245 | 0.28 | 1.20 |
| 0.030 | 0.030 |
X42/L290 | 0.28 | 1.30 |
| 0.030 | 0.030 |
X46/L320、X52/L360、X56/390 | 0.28 | 1.40 |
| 0.030 | 0.030 |
X60/L415、X65/L450、X70/L485 | 0.28 | 1.40 |
| 0.030 | 0.030 |
0.0PSL2 | |||||
B/L245 | 0.24 | 1.20 |
| 0.025 | 0.015 |
X42/L290 | 0.24 | 1.30 |
| 0.025 | 0.015 |
X46/L320、X52/L360、X56/L390 | 0.24 | 1.40 |
| 0.025 | 0.015 |
X60/L415、X65/L450、X70/L485 | 0.24 | 1.40 |
| 0.025 | 0.015 |
