在下屈服强度降低的同时，其抗拉强度和断后伸长率变化不大。
The tensile strength and elongation after fracture vary little after rolling.
与经普通淬火和高温回火的相比，经磁场淬火和高温回火的T10钢的抗拉强度提高了28%，断后伸长率提高了8。
The tensile strength, elongation and hardness of T10 steel subjected to magnetic field quenching and to high temperature tempering were separately increased by 28%, by 8.
用电镜对邯钢Q 235, Q 345中板伸长率低的典型试样进行了断口、金相组织分析，找出了试样断后伸长率低的原因，提出了相应的改进建议。
With electron microscope the fracture surface and metallographic structure analysis is done for typical sample of Q235, Q345 plate of low elongation, its reason found out, some Suggestions proposed.
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