汽车用钢中的板材是生产汽车的最主要的原材料，汽车外壳、车门、顶盖、地板、等覆盖件用薄钢板均是冷轧板，大梁、横梁、保险杠等均是热轧钢板。随着对汽车性能的要求越来越高，也对其生产所需原材料要求也越来越高，主要表现在对钢板强度、韧性等方便，高强板的应用越来越广泛！

The plate in automotive steel is the most important raw material for the production of automobile, automobile shell, door, roof, cover, floor, and other cover parts are cold rolled plates, beam, beam, bumper and so on are hot rolled steel plates.With the higher and higher requirements for automobile performance, but also for the production of raw materials requirements are also higher and higher, mainly reflected in the steel plate strength, toughness and other convenience, high strength board is more and more widely used!

◆热轧钢板

低合金高强度钢，利用控轧控冷、细化晶粒和沉淀强化等作用，得到优良的综合力学性能，其屈强比高、回弹大，一般随强度的提高延伸性降低。为提高冷成型性能和焊接性能，钢中的碳含量有降低的趋势，一般用在汽车大梁、横梁、传动轴管和轿车底盘零件等结构件上，一般屈服强大大于550MPa，抗拉强度在600MPa~950MPa，延伸率大于12%，冷弯直径1.5a。

◆ hot rolled sheet

Low alloy high strength steel, using the effect of control rolling and cooling, grain refinement and precipitation reinforcement, obtains excellent comprehensive mechanical properties, with high yield strength ratio and large rebound, and the elongation generally decreases with the improvement of strength.In order to improve the cold forming performance and welding performance, the carbon content in steel tends to reduce, generally used in the car beam, beam, transmission shaft pipe and car chassis parts, generally yield strength is more than 550MPa, tensile strength in 600MPa~950MPa, the elongation rate is more than 12%, the cold bending diameter is 1.5a.

“大梁”重要程度，使得它的材质必须是那种性能指标特别高的钢材，同样，其厚度也非常高，一般为4mm——8mm。

"girder" importance, so that its material must be the kind of particularly high performance index of steel, also, its thickness is also very high, generally 4mm —— 8mm.

大梁的特点有很大一部分是其钢材的特性决定的。由于高强度汽车大梁钢的性能稳定、表面质量好，得到了国内用户的广泛认可。

A large part of the characteristics of the girder is determined by the characteristics of its steel.Due to the stable performance and good surface quality of the girder steel of high strength automobile, it has been widely recognized by domestic users.

汽车大梁钢高强化是汽车工业的未来发展趋势，采用高强汽车大梁不仅可以降低汽车自重，还利于节能减排和保护环境。采用了低碳的成分设计和通过合理的冶炼和轧制工艺，开展汽车大梁钢的表面氧化铁皮控制技术、低残余应力高强度汽车大梁钢的控制技术和薄规格高强度汽车大梁钢的精轧机压下负荷分配及板形控制技术的研究，使高强度汽车大梁钢具有良好的表面质量、切割下料变形小、良好的强韧性匹配和高的成形性。

High strengthening of automobile beam steel is the future development trend of the automobile industry. The use of high strength automobile beam can not only reduce the dead weight of cars, but also be conducive to energy conservation, emission reduction and environmental protection.Adopted low carbon composition design and reasonable smelting and rolling process, automobile girder steel surface oxide control technology, low residual stress high strength automotive steel beam control technology and thin specification high strength automotive girder steel pressure load distribution and plate control technology, make high strength automotive girder steel has good surface quality, cutting deformation, good toughness matching and high formability.

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If you are interested in our products and services, if you want to have further information about the car girder steel, please contact us, affordable!