预应力混凝土用螺纹钢筋 (精轧螺纹钢) 力学性能要求
|
强度级别 |
屈服强度/MPa |
抗拉强度/MPa |
断后延伸率/% |
|
PSB500 |
≥500 |
≥550 |
≥10 |
|
PSB785 |
≥785 |
≥980 |
≥7 |
|
PSB830 |
≥830 |
≥1030 |
≥6 |
|
PSB930 |
≥930 |
≥1080 |
≥6 |
|
PSB1080 |
≥1080 |
|
|