商用车使用频率高、能耗高,约占我国汽车能耗的60%左右,商用车轻量化不仅潜力巨大,而且是汽车节能减排极为重要的一个方面。商用车轻量化主要的切入点是车架、车轮、冲焊桥壳、货厢等大量应用热轧板的构件。本文主要介绍屈服强度600～700 The high frequency of use of commercial vehicles, high energy consumption, accounting for about 60% of China’s automobile energy consumption, commercial vehicle lightweight not only has great potential, but also a car energy saving is extremely important aspect. Light commercial vehicles the main entry point is the frame, wheels, welding bridge shell, cargo boxes and other large-scale application of hot-rolled plate components. This article describes the yield strength 600 ~ 700