上海钰成实业有限公司
牌号解释
B:宝钢，BAOSTEEL
340:规定的最小屈服强度，MPa
590:规定的最小抗拉强度，MPa
DP:双相钢，dual phase steels
D:热镀代号，for hot dip coating
ZM:热镀锌镁合金镀层 hot-dip zinc-magnesium alloy coating(ZM)
成分 ( Wt% )
C:≤0.15 Si:≤0.6 Mn:≤2.5 P:≤0.04 S:≤0.015 Al:≥0.005 Ni+Cr+Mo:≤1.5
备注:根据需要可添加 Ni、Cr、Mo 等合金元素，此时这些合金元素的总量不大于 1.5%。
性能
常规拉伸
| 标距 | 屈服强度（MPa） | 抗拉强度（MPa） | 断后伸长率（%） | n0 | n45 | n90 |
| L0=50mm | 340~440 | ≥590 | ≥20 | ≥0.13 | ≥0.13 | ≥0.13 |
| 备注 :无明显屈服时采用 RP0.2，否则采用 ReL。 b当产品公称厚度大于 0.50mm，但小于等于 0.70mm 时，断后伸长率允许下降 2%；当产品公称厚度不大于 0.50mm 时， 断后伸长率允许下降 4%。通常情况下，试样方向为横向，试样为 JIS Z 2241 规定的 No.5 试样。 | ||||||
镀锌
| 上表面镀层均重（g/㎡） | 下表面镀层均重（g/㎡） | 镀层种类 | 镀层形式 |
| 30~150 | 30~150 | 纯锌 | 差厚 |
| 备注 :差厚比 1:3。 | |||
| 上表面镀层均重（g/㎡） | 下表面镀层均重（g/㎡） | 镀层种类 | 镀层形式 |
| 30~225 | 30~225 | 纯锌 | 等厚 |
| 备注 :a50 g/m2 镀层(纯锌和锌铁合金)重量约等于镀层厚度为 | |||
| Q/BQB 420热镀锌/锌铁合金/锌镁合金镀层钢板及钢带 | ||||
| 钢种 | 热镀锌/冷轧基板 | 热镀锌/热轧基板 | 锌铁合金 | 锌镁合金 |
| 低碳钢或无间隙原子钢 | DC51D+Z | DD51D+Z | DC51D+ZF | DC51D+ZM |
| DC52D+Z | DC52D+ZF | DC52D+ZM | ||
| DC53D+Z | DC53D+ZF | DC53D+ZM | ||
| DC54D+Z | DC54D+ZF | DC54D+ZM | ||
| DC56D+Z | DC56D+ZF | DC56D+ZM | ||
| DC57D+Z | DC57D+ZF | DC57D+ZM | ||
| 碳素结构钢或低合金钢 | S220GD+Z | S220GD+ZF | S220GD+ZM | |
| S250GD+Z | S250GD+ZF | S250GD+ZM | ||
| S280GD+Z | S280GD+ZF | S280GD+ZM | ||
| S320GD+Z | S320GD+ZF | S320GD+ZM | ||
| S350GD+Z | S350GD+ZF | S350GD+ZM | ||
| S550GD+Z | S550GD+ZM | |||
| 无间隙原子高强度钢 | HC180YD+Z | HC180YD+ZF | HC180YD+ZM | |
| HC220YD+Z | HC220YD+ZF | HC220YD+ZM | ||
| B240P1D+Z | B240P1D+ZF | B240P1D+ZM | ||
| B260LYD+Z | B260LYD+ZF | B260LYD+ZM | ||
| HC260YD+Z | HC260YD+ZF | HC260YD+ZM | ||
| 烘烤硬化钢 | HC180BD+Z | HC180BD+ZF | HC180BD+ZM | |
| HC220BD+Z | HC220BD+ZF | HC220BD+ZM | ||
| HC260BD+Z | HC260BD+ZF | HC260BD+ZM | ||
| HC300BD+Z | HC300BD+ZF | HC300BD+ZM | ||
| 低合金高强度钢 | HC260LAD+Z | HC260LAD+ZF | HC260LAD+ZM | |
| HC300LAD+Z | HC300LAD+ZF | HC300LAD+ZM | ||
| HC340LAD+Z | HD340LAD+Z | HC340LAD+ZF | HC340LAD+ZM | |
| HC380LAD+Z | HC380LAD+ZF | HC380LAD+ZM | ||
| HC420LAD+Z | HD410LAD+Z | HC420LAD+ZF | HC420LAD+ZM | |
| HC460LAD+Z | HC460LAD+ZF | HC460LAD+ZM | ||
| HC500LAD+Z | HC500LAD+ZF | HC500LAD+ZM | ||
| HD550LAD+Z | ||||
| 双相钢 | HC250/450DPD+Z | HC250/450DPD+ZF | HC250/450DPD+ZM | |
| HC300/500DPD+Z | HC300/500DPD+ZF | HC300/500DPD+ZM | ||
| HC280/590DPD+Z | HC280/590DPD+ZF | HC280/590DPD+ZM | ||
| HC340/590DPD+Z | HC340/590DPD+ZF | HC340/590DPD+ZM | ||
| B340/590DPD+Z | B340/590DPD+ZF | B340/590DPD+ZM | ||
| HC420/780DPD+Z | HC420/780DPD+ZF | |||
| HC500/780DPD+Z | HC500/780DPD+ZF | |||
| HC550/980DPD+Z | HC550/980DPD+ZF | |||
| HC650/980DPD+Z | HC650/980DPD+ZF | |||
| HC700/980DPD+Z | HC700/980DPD+ZF | |||
| HC740/1180DPD+Z | HC740/1180DPD+ZF | |||
| HC820/1180DPD+Z | HC820/1180DPD+ZF | |||
| 相变诱导塑性钢 | HC380/590TRD+Z | HC380/590TRD+ZF | ||
| HC400/690TRD+Z | HC400/690TRD+ZF | |||
| HC420/780TRD+Z | HC420/780TRD+ZF | |||
| 复相钢 | HC570/780CPD+Z | HD660/760CPD+Z | ||
| HC780/980CPD+Z | ||||
| 淬火延性钢 | HC600/980QPD+Z | |||
| HC600/980QP-ELD+Z | ||||
| HC820/1180QPD+Z | ||||
| HC820/1180QP-ELD+Z | ||||
