PSB830精轧螺纹钢,即屈服强度≥830/MPa,抗拉强度≥1080MPa,断后伸长率≥6%;常用规格分为15mm,25mm,32mm,36mm,40mm,50mm,工程中用量为25mm、32mm两种规格。
精轧螺纹钢常规定尺长度为9米和12米,可根据用户需要商定定尺长度。

PSB830精轧螺纹钢与精轧螺纹钢理论系数表:
级别 Steel grade |
规定非比例延伸强度 Yield strength ReL(RP0.2),MPa |
抗拉强度 Tensile strength Rm. MPa |
断后伸长率 Elongation at failure A/% | 大力下总伸长率 Uniform elongation Agt/% |
应力松驰性能 Stress relaxation |
初始应力 Original stress |
1000h 后应力松驰率 Relaxation rate after 1000h r/% |
10h 后应力松驰率 Relaxation rate after 10h r/% |
PSB500 |
≥ 500 |
≥ 630 |
≥ 10 |
|
|
≤ 3 |
≤ 1.5 |
PSB785 |
≥ 785 |
≥ 980 |
≥ 7 |
≥ 3.5 |
0.8R |
≤ 3 |
|
PSB830 |
≥ 830 |
≥ 1030 |
≥ 6 |
PSB930 |
≥ 930 |
≥ 1080 |
≥ 6 |
PSB1080 |
≥ 1080 |
≥ 1230 |
≥ 6 |
≥ 2.5 |