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名称：冷成型热轧汽车结构钢板
材质 / 牌号：QSTE420TM
执行标准：Q/BQB 310 （参考标准：SEW 092 ；DIN 17102 ；EN10025）
化学成分（熔炼分析）%
C : ≤0.12
Si : ≤0.35
Mn : ≤1.50
P : ≤0.03
S : ≤0.025
Ti : ≤0.22
Nb : ≤0.09
Ait: ≥0.01
试样测试（ 拉伸、弯曲、试样为横向 ；Mpa ）。
屈服：≥420
抗拉：480-620
延伸：≥21
使用范围：本牌号系列为细晶粒钢，具有良好冷成型性。用于要求良好的冷成型性能并有较高或高强度要求的汽车大梁、横梁等汽车结构件。
Name: Car rolled structural steel cold formingMaterial / grade: QSTE420TM
Executive Standard: Q / BQB 310 (reference standard: SEW 092; DIN 17102; EN10025)
Chemical composition (heat analysis)%
C: ≤ 0.12
Si: ≤ 0.35
Mn: ≤ 1.50
P: ≤ 0.03
S: ≤ 0.025
Ti: ≤ 0.22
Nb: ≤ 0.09
Ait: ≥ 0.01
Sample test (tensile, bending, the sample is horizontal; Mpa).
Yield: ≥ 420
Tensile :480-620
Extension: ≥ 21
Use: This series of fine-grained steel grades with good cold formability. For applications requiring good cold formability and have a high or high strength requirements for automobile
