預(yù)應(yīng)力混凝土用螺紋鋼筋 (精軋螺紋鋼) 力學(xué)性能要求
|
強(qiáng)度級(jí)別 |
屈服強(qiáng)度/MPa |
抗拉強(qiáng)度/MPa |
斷后延伸率/% |
|
PSB500 |
≥500 |
≥550 |
≥10 |
|
PSB785 |
≥785 |
≥980 |
≥7 |
|
PSB830 |
≥830 |
≥1030 |
≥6 |
|
PSB930 |
≥930 |
≥1080 |
≥6 |
|
PSB1080 |
≥1080 |
|
|
