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含碳0.206,含锰0.57,含钒98.99,屈服强度355.402,抗拉强度509.733,伸长率19.72%,该Q3

来源:学生作业帮 编辑:作业帮 分类:化学作业 时间:2024/11/08 16:58:22
含碳0.206,含锰0.57,含钒98.99,屈服强度355.402,抗拉强度509.733,伸长率19.72%,该Q345B钢板合格吗.
Q345化学成分:
Q345A:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035;
Q345B:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035;
Q345C:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.030,Al≥0.015;
Q345D:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.025,Al≥0.015;
Q345E:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.025,S≤0.020,Al≥0.015;
Q345A、B、C、D、E均含Nb≤0.07,V≤0.15,Ti≤0.20,Cr≤0.30,Ni≤0.012,Mo≤0.10.

Q345的屈服强度下限为345MPa
抗拉强度:490-675
伸长率:≥21

严格的说,不合格