低合金高强度结构钢的牌号和化学成分

作者：bearingpower        发表时间：2010-12-12

低合金高强度结构钢的牌号和化学成分关键字：结构钢 牌号等级化学成分(质量分数)(％)C≤MnSi≤P≤S≤VNbTiAl≥Cr≤Ni≤Q295AO.160.80～1.500.550.0450.0450.02～O.150.015～O.060O.02～0.20B0.040O.040Q345AO.201.00～1.600.550.045O.0450.02～O.150.015～O.0600.02～O.20BO.040O.040C0.0350.035O.015DO.180.030O.030O.015E0.025O.025O.015Q390A0.201.00～1.60O.550.0450.045O.02～O.20O.015～0.060O.02～O.20O.300.70BO.040O.040O.30O.70CO.035O.035O.0150.30O.70DO.0300.0300.015O.300.70E0.025O.025O.015O.300.70Q420AO.201.00～1.70O.55O.045O.045O.02～0.20O.015～0.0600.02～O.20O.40O.70B0.040O.040O.40O.70CO.035O.0350.0150.40O.70DO.0300.0300.015O.40O.70E0.0250.0250.015O.40O.70Q460CO.201.00～1.70O.550.0350.0350.02～0.200.015～O.0600.02～O.20O.015O.700.70DO.0300.0300.0150.700.70E0.025O.025O.0150.70