轎車車身用鋼板包括：熱/冷軋鋼板、表面處理（鍍覆）鋼板、不銹鋼板、高強(qiáng)度鋼板等。

Steel plates for car body include: hot / cold rolled steel plate, surface treatment (coated) steel plate, stainless steel plate, high strength steel plate, etc.

鋼板的主要性能報(bào)貨可塑性、彈性、加工硬化。

The main properties of steel plates are reported as plasticity, elasticity and processing hardening.

熱軋軟鋼板：含碳量一般在0.15％以下，硬度低、抗拉強(qiáng)度不高。主要用于擋泥板、地板、行李箱鉸鏈、保險(xiǎn)杠等。

Hot rolled soft steel plate: the carbon content is generally below 0.15%, low hardness, tensile strength is not high. Mainly used for fenders, floors, luggage compartment hinges, bumpers, etc.

冷軋軟鋼板：相比熱軋軟鋼板加工性能好，且表面美觀。如Q215、碳鋼和低合金結(jié)構(gòu)鋼冷扎鋼板、10F、08F、優(yōu)質(zhì)碳素結(jié)構(gòu)鋼冷軋薄鋼板等，用于車身外板、零件的外殼、車頂板、行李箱蓋、發(fā)動(dòng)機(jī)罩、車門內(nèi)外板、保險(xiǎn)杠、擋泥板等。

Cold rolled soft steel plate: compared with hot rolled soft steel plate processing performance, and beautiful surface. Such as Q215, carbon steel and low alloy structure steel cold-tie steel plate, 10F, 08F, high quality carbon structure steel cold-rolled thin steel plate, etc., used for the body outside plate, parts shell, roof plate, trunk cover, hood, door inside and outside plate, bumper, fender, etc.

高強(qiáng)度鋼板：抗拉強(qiáng)度相當(dāng)高，具有很強(qiáng)的抗破壞能力。用于車身外板、翼子板等。

High strength steel plate: the tensile strength is quite high, with a strong damage resistance. For the body outboard, fenders, etc.

表面處理鋼：鍍鋅鋼板、鋅粉漆涂裝鋼板等，防腐蝕性能好。用于車門、車頂內(nèi)襯板、下護(hù)板、車身底部等。

Surface treatment steel: galvanized steel plate, zinc powder paint coated steel plate, etc., good corrosion prevention performance. For doors, roof lining panels, lower guards, body bottom, etc.

汽車車身外板用鋼主要用于制造前、后、左、右車門外板、發(fā)動(dòng)機(jī)罩外板、行李箱蓋外板等零件。汽車車身外板應(yīng)具很好的成形性,抗腐蝕性和抗凹性以及良好的點(diǎn)焊性,汽車車身外板多用鍍層板,以滿足汽車外板4 年運(yùn)行無銹斑的防腐要求,為了提高抗凹性,汽車外板的鋼板多用BH 鋼(烘烤硬化鋼) , IF 增磷鋼以及高成形性的冷軋退火雙相鋼(如DP30260 等) ,以減薄厚度,保證抗凹性;涂層板多用熱鍍鋅板、熱鍍鋅鐵板、電鍍鋅板以及電鍍鋅- Ni 板等,用合金鍍層板的目的是減薄鍍層厚度,提高結(jié)合力,改善點(diǎn)焊性,減少焊接車間鋅污染。

The steel used for the car body outer plate is mainly used for manufacturing the front, rear, left and right car outer door plate, engine hood outer plate, trunk cover outer plate and other parts. The car body exterior plate should be very well formed, Corrosion and concave resistance and good spot welding resistance, Car body exterior plate multi coated plate, In order to meet the anti-corrosion requirements of 4 years of running without rust, To improve the concave resistance, The steel plate of the automobile outer plate is mostly used as BH steel (baked hardened steel), IF phosphorus-enhancing steel and high-forming cold-rolled and annealed dual-phase steel (e. g., DP30260, etc.), To reduce the thin thickness, Ensure the concave resistance; Coating plate is mostly hot galvanized plate, hot galvanized iron plate, electrogalvanized plate and galvanized-Ni board, The purpose of the alloy plating plate is to reduce the thin coating thickness, Improve the binding forces, Improve spot weldability, Reduce the zinc pollution in the welding workshop.