我國(guó)的國(guó)家標(biāo)準(zhǔn)《低合金高強(qiáng)度鋼》(GB/T1591—1994)相關(guān)牌號(hào)和各項(xiàng)技術(shù)要求如表2-4-5~表2-4-11所示。表2-4-5化學(xué)成分牌號(hào)質(zhì)量等級(jí)化學(xué)成分①,②(質(zhì)量分?jǐn)?shù))/%CSiMnPSNbVTiCrNiCuNMoBAl不大于不小于Q345A≤0.20≤0.50≤1.700.0350.0350.070.150.050.300.50 (共 3028 字) [閱讀本文] >>