In fact, when it comes to the difference between aseismic steel bar and ordinary steel bar, we can see from the name that one is with aseismic steel bar and the other is ordinary steel bar. Seismic steel bars are marked with E, and now they are basically used in the market. The core of steel bar with E is that the index of super-strength ratio of steel bar should not be too large, while the index of strength-yield ratio and elongation should not be too small.

　　抗震鋼筋和普通鋼筋的區別

　　The Difference between Seismic Reinforcement Bar and Common Reinforcement Bar

　　對于抗震鋼筋和普通鋼筋的區別，比較科學的是以下三點區別：

　　For the difference between aseismic steel bar and ordinary steel bar, the following three points are more scientific:

　　1)抗震鋼筋的實測抗拉強度與實測屈服強度特征值之比不小于1.25；

　　1) The ratio of the measured tensile strength to the measured yield strength is not less than 1.25;

　　2)抗震鋼筋的實測屈服強度與標準規定的屈服強度特征值之比不大于1.30；

　　2) The ratio of the measured yield strength to the characteristic value of the standard yield strength is not more than 1.30;

　　3)抗震鋼筋的大力總伸長不小于9%。

　　3) The maximum total elongation of the aseismic steel bar is not less than 9%.

　　以上三條確保了鋼筋的抗震能力，使得抗震鋼筋能夠在建筑發生傾斜、變形時“穩起”，不發生斷裂。

　　The above three elements ensure the anti-seismic ability of the steel bars, so that the anti-seismic steel bars can be "stabilized" when the buildings are inclined and deformed, and do not break.

　　不過從新標準對抗震鋼筋的三條規定要求來看，主要針對鋼筋強度和伸長率的實測值在技術指標上作了一定的提升，如條對抗震鋼筋規定從屈服到拉斷還應承受25%以上的拉力；第二條保證鋼筋屈服強度離散性不會過大而影響到設計對結構延性要求的效果；第三條由對普通鋼筋規定的大力總伸長率不小于7.5%提高到不小于9%。這些技術指標的提高，加強了鋼筋的抗震能力，保證了結構構件在地震力作用下具有更好的延性。

　　However, according to the three requirements of the new standard for seismic steel bars, the measured values of strength and elongation of steel bars have been improved to some extent in technical indicators, such as the first stipulation that seismic steel bars should bear more than 25% tension from yielding to breaking; the second one guarantees that the discreteness of yield strength of steel bars will not be too large to affect the effect of ductility requirement in design; and the third one guarantees that the discreteness of yield strength of steel bars will not be too large The maximum total elongation of bar is increased from 7.5% to 9%. The improvement of these technical indicators strengthens the seismic capacity of steel bars and ensures that structural members have better ductility under seismic force.

　　因此，抗震鋼筋和普通鋼筋的本質區別就是使鋼筋獲得更好的延性，從而能夠更好地保證重要結構構件在地震時具有足夠的塑性變形能力和耗能能力。

　　Therefore, the essential difference between aseismic steel bar and ordinary steel bar is to make the steel bar have better ductility, which can better ensure that the important structural components have enough plastic deformation capacity and energy dissipation capacity in earthquake.