均匀伸长率

但PC棒的强屈比和均匀伸长率略低于高强钢丝，延性相对不如后者。

But PC steel bars ' tensile ratio and uniform elongation slightly lower than high-strength steel wire , and its tensility inferior to high-strength steel wire .

结果表明均匀伸长率不小于7%，强屈比不小于1.25的钢筋，能够满足中国规范对柱子的抗震要求。

The results indicated that the steel bars with value of uniform elongation over 7 % , and strain-hardening ratio more than 1.25 was capable of satisfying the demands of Chinese seismic code .

关于钢筋均匀伸长率限值的探讨

Discuss of Least Even Percentage Elongation for Steel Bars

钢筋在拉伸试验中，达到最大作用力时对应的总伸长率为均匀伸长率，它是反映钢筋延性的重要指标，直接关系到结构的抗震性能。

The uniform elongation is the characteristic strain of reinforcement steel at maximum force in simple tension test , it is an important indicator to reflect the ductility of reinforcing steel , and directly affects the seismic behavior of structure .

在球墨铸铁中，石墨大小、形状变得均匀，改善了伸长率。

In ductile iron , the size and morphology of graphite becomes uniform and elongation is improved .