Q345B低合金高强钢

　　Q345是一种钢材材料。它是低碳合金钢（C C<0.2%)，综合性能好，低温性能好，冷冲压性能，焊接性能和可切削性能好。广泛应用于桥梁、车辆、船舶、建筑、压力容器等。Q代表的是这种材质的屈服，后面的345，就是指这种材质的屈服值，在345MPa左右。并会随着材质的厚度的增加而使其屈服值减小。

　　牌号CSiMnPSVNbAlTiCrNiCuQ345A≤0.20≤0.50≤1.70≤0.035≤0.035≤0.15≤0.07-≤0.20≤0.30≤0.50≤0.30Q345B≤0.20≤0.50≤1.70≤0.0350.035≤0.15≤0.07-≤0.20≤0.30≤0.50≤0.30Q345C ≤ 0.20 ≤ 0.50 ≤ 1.70 ≤ 0.030 ≤ 0.15 ≤ 0.07 ≥ 0.20 ≤ 0.30 ≤ 0.50 ≤ 0.0.18 ≤ 0.70 ≤ 0.030 ≤ 0.07 ≤ 0.0.30 ≤ 0.50.30q3q3q3q3q3q.30 ≤ 0.30 ≤ 0.30 ≤ 0.30q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q3q.50 ≤ 0.18≤ 0.50≤1.70≤0.02≤0.15≤0.015≤0.30≤0.50≤0.30

　　Q345B板可以称为Q345B Youte钢板，Q345B钢板，Q345B滚动板，Q345B开放式平板电脑，Q345B，Q345B，Q345B冷卷板，Q345B，Q345B热卷板，Q345B，Q345B薄板，Q345B厚板，Q345B厚板，Q345B厚度厚，厚度厚，厚度厚度， 。

　　Q345B rods can be called Q345B Youte Steel Round Steel, Q345B Round Steel, Q345B Circle, Q345B wire, Q345B silk material, Q345B forging circle, Q345B round stick, Q345B black rod, Q345B light circle, Q345B, Q345B Light round, Q345B hot -滚动钢，Q345B滚动圆圈，Q345B冷张力钢等。

　　Q345B pipes can be called Q345B Youte Steel Pipe, Q345B steel pipe, Q345B Youte steel seamless pipe, Q345B seamless pipe, Q345B You special steel welded pipe, Q345B tube, Q345B Youte steel precision pipe, Q345B precision pipe, Q345B capillary pipe, etc.本质