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