钢材材质化学成分对照表

钢材材质化学成分对照 低合金高强度结构钢 GB/T 1591-94 牌号等级 　化 学 成 份 % Mn Si≤ P ≤ S ≤ V Nb Ti C ≤ Al≥ Cr≤ Ni≤ Q295 A 0.80-1.50 0.55 0.045 0.045 0.02-0.15 0.015-0.06 0.02-0.20 0.16 Q295 B 0.80-1.50 0.55 0.040 0.040 0.02-0.15 0.015-0.06 0.02-0.20 0.16 Q345 A 1.00-1.60 0.55 0.045 0.045 0.02-0.15 0.015-0.06 0.02-0.20 0.02-0.20 Q345 B 1.00-1.60 0.55 0.040 0.040 0.02-0.15 0.015-0.06 0.02-0.20 0.02-0.20 Q345 C 1.00-1.60 0.55 0.035 0.035 0.02-0.15 0.015-0.06 0.02-0.20 0.02-0.20 0.015 Q345 D 1.00-1.60 0.55 0.030 0.030 0.02-0.15 0.015-0.06 0.02-0.20 0.18 0.015 Q345 E 1.00-1.60 0.55 0.025 0.025 0.02-0.15 0.015-0.06 0.02-0.20 0.18 0.015 Q390 A 1.00-1.60 0.55 0.045 0.045 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.30 0.7 Q390 B 1.00-1.60 0.55 0.040 0.040 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.30 0.7 Q390 C 1.00-1.60 0.55 0.035 0.035 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.30 0.7 Q390 D 1.00-1.60 0.55 0.030 0.030 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.30 0.7 Q390 E 1.00-1.60 0.55 0.025 0.025 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.30 0.7 Q420 A 1.00-1.70 0.55 0.045 0.045 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.4 0.7 Q420 B 1.00-1.70 0.55 0.040 0.040 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.4 0.7 Q420 C 1.00-1.70 0.55 0.035 0.035 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.4 0.7 Q420 D 1.00-1.70 0.55 0.030 0.030 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.4 0.7 Q420 E 1.00-1.70 0.55 0.025 0.025 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.4 0.7 Q460 C 1.00-1.70 0.55 0.035 0.035 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.7 0.7 Q460 D 1.00-1.70 0.55 0.030 0.030 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.7 0.7 Q460 E 1.00-1.70 0.55 0.025 0.025 0.02-0.20 0.015-0.06 0.02-0.20 0.02-0.20 0.015 0.7 0.7 高质量带肋钢筋用钢 GB1499-1998 牌号 原牌号 化 学 成 份 ，% C Si Mn V Nb Ti P S 不大于 HRB335 20MnSi 0.17-0.25 0.40-0.80 1.20-1.60 0.045 0.045 HRB 400 20MnSiV 0.17-0.25 0.20-0.80 1.20-1.60 0.04-0.12 0.045 0.045 20MnSiNb 0.17-0.25 0.20-0.80 1.20-1.60 0.02-0.04 0.045 0.045 20MnTi 0.17-0.25 0.17-0.37 1.20-1.60 0.02-0.05 0.045 0.045 煤机用热轧异型钢 GB/T3424-94 牌 号 化 学 成 份 % C Si Mn P不大于 S不大于 M510 0.20-0.27 0.20-0.60 1.20-1.60 0.045 0.045 M540 0.20-0.29 0.17-0.37 1.30-1.80 0.045 0.045 M565 0.25-0.33 0.17-0.37 1.30-1.80 0.045 0.045 船体用结构钢 GB712-88 钢类 等级 化 学 成 份 % C Mn Si P S ALs Nb V 一般强度钢 A ≤0.22 ≥2.5C 0.10-0.35 ≤0.040 ≤0.040 一般强度钢 B ≤0.21 0.60-1.00 0.10-0.35 ≤0.040 ≤0.040 一般强度钢 D ≤0.21 0.60-1.10 0.10-0.35 ≤0.040 ≤0.040 一般强度钢 E ≤0.18 0.70-1.20 0.10-0.35 ≤0.040 ≤0.040 ≥0.015 高强度钢 AH32 ≤0.18 0.70-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 高强度钢 DH32 ≤0.18 0.90-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 高强度钢 EH32 ≤0.18 0.90-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 高强度钢 AH36 ≤0.18 0.70-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 0.015-0.050 0.30-0.10 高强度钢 DH36 ≤0.18 0.90-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 0.015-0.050 0.30-0.10 高强度钢 EH36 ≤0.18 0.90-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015 0.015-0.050 0.30-0.10 合金结构钢GB/T 3077－88 牌号 化 学 成 份 % C Si Mn P S Cr Ni Cu 20Mn2 0.17-0.24 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 30Mn2 0.27-0.34 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 35Mn2 0.32-0.39 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 40Mn2 0.37-0.44 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 45Mn2 0.42-0.49 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 50Mn2 0.47-0.55 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 V 0.07-0.12 20MnV 0.17-0.24 0.17-0.37 1.30-1.60 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 27SiMn 0.24-0.32 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 35SiMn 0.32-0.40 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 42SiMn 0.39-0.45 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.30 15Cr 0.12-0.18 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.70-1.00 ≤0.30 ≤0.30 15CrA 0.12-0.17 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.70-1.00 ≤0.30 ≤0.30 20Cr 0.18-0.24 0.17-0.57 0.50-0.80 ≤0.035 ≤0.035 0.70-1.00 ≤0.30 ≤0.30 30Cr 0.27-0.34 0.50-0.80 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 35Cr 0.32-0.39 0.17-0.57 0.50-0.80 ≤0.035 ≤0.035 0.40-0.70 ≤0.30 ≤0.30 12CrMo 0.08-0.15 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.40-0.55 15CrMo 0.12-0.18 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.40-0.55 20CrMo 0.17-0.24 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.15-0.25 30CrMo 0.24-0.34 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.15-0.25 30CrMoA 0.26-0.33 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.15-0.25 35CrMo 0.32-0.40 0.17-0.57 0.40-0.70 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 Mo 0.15-0.25 15CrMn 0.12-0.18 0.17-0.57 1.10-1.40 ≤0.035 ≤0.035 0.40-0.70 ≤0.30 ≤0.30 20CrMn 0.17-0.23 0.17-0.57 0.90-1.20 ≤0.035 ≤0.035 0.90-1.20 ≤0.30 ≤0.30 40CrMn 0.37-0.45 0.17-0.57 0.90-1.20 ≤0.035 ≤0.035 0.90-1.20 ≤0.30 ≤0.30 20CrMnSi 0.17-0.23 0.90-1.20 0.80-1.10 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 30CrMnSi 0.27-0.34 0.90-1.20 0.80-1.10 ≤0.035 ≤0.035 0.80-1.10 ≤0.30 ≤0.30 20CrMnMo 0.17-0.23 0.17-0.37 0.80-1.10 ≤0.035 ≤0.035 1.10-1.40 ≤0.30 ≤0.30 Mo 0.20-0.30 40CrMnMo 0.32-0.45 0.17-0.37 0.80-1.20 ≤0.035 ≤0.035 0.90-1.20 ≤0.30 ≤0.30 Mo 0.20-0.30 20CrMnTi 0.17-0.23 0.17-0.37 0.80-1.20 ≤0.035 ≤0.035 1.00-1.30 ≤0.30 ≤0.30 Ti 0.04-0.10 30CrMnTi 0.24-0.32 0.17-0.37 0.80-1.10 ≤0.035 ≤0.035 1.00-1.30 ≤0.30 ≤0.30 Ti 0.04-0.10 焊 接 用 钢 丝 钢 GB/T 1300 牌号 化 学 成 份 % C Si Mn P S H08A ≤0.10 ≤0.03 0.30- 0.55 ≤0.030 ≤0.030 H08E ≤0.10 ≤0.03 0.30- 0.55 ≤0.020 ≤0.020 H08C ≤0.10 ≤0.03 0.30- 0.55 ≤0.015 ≤0.015 H08MnA ≤0.10 ≤0.07 0.80- 1.10 ≤0.030 ≤0.030 H15A 0.11- 0.18 ≤0.03 0.35- 0.65 ≤0.030 ≤0.030 H15Mn 0.11- 0.18 ≤0.03 0.80- 1.10 ≤0.035 ≤0.035 H10Mn2 ≤0.12 ≤0.07 1.50- 1.90 ≤0.035 ≤0.035 H08Mn2Si ≤0.11 0.65- 0.95 1.70- 2.10 ≤0.035 ≤0.035 H08Mn2SiA ≤0.11 0.65- 0.95 1.80- 2.10 ≤0.030 ≤0.030 H10MnSi ≤0.14 0.60- 0.90 0.80- 1.10 ≤0.035 ≤0.035 H10MnSiMo ≤0.14 0.70- 1.10 0.90- 1.20 ≤0.035 ≤0.035 H10MnSiMoTiA 0.08～ 0.12 0.40～ 0.70 1.00～ 1.30 ≤0.030 ≤0.025 H08MnMoA ≤ 0.10 ≤0.25 1.20～ 1.60 ≤0.030 ≤0.030 H08Mn2MoA 0.06～ 0.11 ≤0.25 1.60～ 1.90 ≤0.030 ≤0.030 H10Mn2MoA 0.08～ 0.13 ≤0.40 1.70～ 2.00 ≤0.030 ≤0.030 H08Mn2MoVA 0.06～ 0.11 ≤ 0.25 1.60～ 1.90 ≤0.030 ≤0.030 H10Mn2MoVA 0.08～ 0.13 ≤0.40 1.70～ 2.00 ≤0.030 ≤0.030 H08CrMoA ≤ 0.10 0.15- 0.35 0.40- 0.70 ≤0.030 ≤0.030 H13CrMoA 0.11- 0.16 0.15- 0.35 0.40- 0.70 ≤0.030 ≤0.030 H18CrMoA 0.15- 0.22 0.15- 0.35 0.40- 0.70 ≤0.030 ≤0.025 H08CrMoVA ≤0.10 0.15- 0.35 0.40- 0.70 ≤0.030 ≤0.030 H08CrNi2MoA 0.05～ 0.10 0.10～ 0.30 0.50～ 0.85 0.030 0.025 H30CrMnSiA 0.25～ 0.35 0.90～ 1.20 0.80～ 1.10 ≤0.025 ≤0.025 H10MoCrA ≤0.12 0.15～ 0.35 0.40～ 0.70 ≤0.030 ≤0.030 牌号 化 学 成 份 % Cr Ni 其它 Mo V Cu H08A ≤0.020 ≤0.30 ≤0.20 H08E ≤0.020 ≤0.30 ≤0.20 H08C ≤0.020 ≤0.30 ≤0.20 H08MnA ≤0.020 ≤0.30 ≤0.20 H15A ≤0.020 ≤0.30 ≤0.20 H15Mn ≤0.020 ≤0.30 ≤0.20 H10Mn2 ≤0.020 ≤0.30 ≤0.20 H08Mn2Si ≤0.020 ≤0.30 ≤0.20 H08Mn2SiA ≤0.020 ≤0.30 ≤0.20 H10MnSi ≤0.020 ≤0.30 ≤0.20 H10MnSiMo ≤0.020 ≤0.30 ≤0.20 H10MnSiMoTiA ≤0.020 ≤0.30 Ti0.05 ～0.15 ≤0.20 H08MnMoA ≤0.020 ≤0.30 Ti0.15 (加入量) 0.30～0.50 ≤0.20 H08Mn2MoA ≤0.020 ≤0.30 Ti0.15 (加入量) 0.50～0.70 ≤0.20 H10Mn2MoA ≤0.020 ≤0.30 Ti0.15 (加入量) 0.60～0.80 ≤0.20 H08Mn2MoVA ≤ 0.20 ≤0.30 Ti0.15 (加入量) 0.50～0.70 0.06～0.12 ≤0.20 H10Mn2MoVA ≤ 0.20 ≤0.30 Ti0.15 (加入量) 0.60～0.80 0.06～0.12 ≤0.20 H08CrMoA 0.80-1.10 ≤0.30 0.40～0.60 ≤0.20 H13CrMoA 0.80-1.10 ≤0.30 0.40～0.60 ≤0.20 H18CrMoA 0.80-1.10 ≤0.30 0.15～0.25 ≤0.20 H08CrMoVA 1.00-1.30 ≤0.30 0.50～0.70 0.15～0.35 ≤0.20 H08CrNi2MoA 0.70～1.00 1.40 ～1.80 0.20～0.40 ≤0.20 H30CrMnSiA 0.80～1.10 ≤0.30 ≤0.20 H10MoCrA 0.45～0.65 ≤0.30 0.40～0.60 ≤0.20 弹 簧 钢 GB/T 1222 牌号 化 学 成 份 % C Si Mn P S Cr Ni Cu 65Mn 0.62-0.70 0.17-0.37 0.90-1.20 ≤0.035 ≤0.035 ≤0.25 ≤0.25 ≤0.25 55Si2Mn 0.52-0.60 1.50-2.00 0.60-0.90 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.25 60Si2Mn 0.56-0.64 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.25 65Si2Mn 0.56-0.64 ≤0.030 ≤0.030 ≤0.035 ≤0.035 ≤0.25 矿 用 钢 GB/T 3414 牌号 化 学 成 份 % C Si Mn P S V 24Mn2K 0.20-0.27 0.17-0.37 1.30-1.80 ≤0.045 ≤0.045 0.07-0.20 20MnVK 0.17-0.20 0.17-0.37 1.20-1.60 ≤0.040 ≤0.040 0.07-0.20 25MnK 0.21-0.31 0.20-0.60 1.20-1.60 ≤0.040 ≤0.050 0.07-0.20 34SiMnK 0.30-0.38 0.90-1.30 1.00-1.40 ≤0.040 ≤0.040 0.07-0.20 冷 镦 钢 GB/T 6478 牌号 化 学 成 份 % C Si Mn P S Cr ML08 0.05-0.12 ≤0.03 0.20-0.50 ≤0.035 ≤0.035 ML10 0.07-0.14 ≤0.03 0.20-0.50 ≤0.035 ≤0.035 ML15 0.12-018 ≤0.07 0.20-0.50 ≤0.035 ≤0.035 ML20 0.17-0.24 ≤0.07 0.20-0.50 ≤0.035 ≤0.035 ML25 0.22-0.30 ≤0.20 0.30-0.60 ≤0.035 ≤0.035 ML30 0.27-0.35 ≤0.20 0.30-0.60 ≤0.035 ≤0.035 ML35 0.32-0.40 ≤0.20 0.30-0.60 ≤0.035 ≤0.035 ML40 0.37-0.45 ≤0.20 0.30-0.60 ≤0.035 ≤0.035 ML45 0.42-0.50 ≤0.20 0.30-0.60 ≤0.035 ≤0.035 ML25Mn 0.22-0.30 ≤0.25 0.50-0.80 ≤0.035 ≤0.035 ML30Mn 0.27-0.35 ≤0.25 0.50-0.80 ≤0.035 ≤0.035 ML35Mn 0.32-0.40 ≤0.25 0.50-0.80 ≤0.035 ≤0.035 ML40Mn 0.37-0.45 ≤0.25 0.50-0.80 ≤0.035 ≤0.035 ML45Mn 0.42-0.50 ≤0.25 0.50-0.80 ≤0.035 ≤0.035 ML15Cr 0.12-018 ≤0.30 0.40-0.70 ≤0.035 ≤0.035 0.70-1.00 ML20Cr 0.17-0.24 ≤0.30 0.50-0.80 ≤0.035 ≤0.035 0.70-1.00 锅炉用碳素钢和低合GB 713 牌号 化 学 成 份 % C Si Mn P S Cu 20g ≤0.24 0.15-0.30 0.35-0.65 ≤0.035 ≤0.035 22g ≤0.26 0.17-0.37 0.60-0.90 ≤0.035 ≤0.035 12Mng ≤0.16 0.20-0.60 1.10-1.50 ≤0.035 ≤0.035 16Mng 0.12-0.20 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 15MnVg 0.10-0.18 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 V 0.04-0.12 ≤0.03 14MnMoVg 0.10-0.18 0.20-0.50 1.20-1.60 ≤0.035 ≤0.035 V 0.05-0.15 Mo0.40-0.65 18MnMoNbg 0.17-0.23 0.17-0.37 1.35-1.65 ≤0.035 ≤0.035 Nb 0.025-0.050 Mo0.40-0.65 压力容器碳素用钢和低合金 GB 6654 牌号 化 学 成 份 % C Si Mn P S Cr Ni Mo Cu 20R ≤0.22 0.15-0.30 0.35-0.80 ≤0.035 ≤0.035 ≤0.030 ≤0.030 ≤0.030 16MnR ≤0.20 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 ≤0.030 ≤0.030 ≤0.030 15MnVR ≤0.18 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 ≤0.030 ≤0.030 V 0.04-0.12 ≤0.030 18MnMoNbR ≤0.23 0.17-0.37 1.35-1.65 ≤0.035 ≤0.035 ≤0.030 ≤0.030 Mo 0.45-0.65 Nb 0.025-0.050 ≤0.030 无缝气瓶用钢GB12447 牌号 化 学 成 份 % C Si Mn P S Cr Ni Mo Cu 40Mn2 0.37-0.44 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.20 40Mn2A 0.37-0.44 0.17-0.37 1.40-1.80 ≤0.025 ≤0.025 ≤0.30 ≤0.30 ≤0.20 34Mn2V 0.30-0.37 0.17-0.37 1.40-1.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 V 0.07-0.12 Mo 0.15-0.25 ≤0.20 30CrMo 0.26-0.34 0.17-0.37 0.40-0.70 ≤0.035 ≤0.035 0.80-1.00 ≤0.30 ≤0.20 桥 梁 用 钢 YB(T)10 牌号 化 学 成 份 % C Si Mn P S Cr Ni V Cu 16Mn9 0.12-0.20 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 ≤0.035 ≤0.30 ≤0.30 15MnV9 0.10-0.18 0.20-0.60 1.20-1.60 ≤0.035 ≤0.035 ≤0.035 ≤0.30 0.04-0.12 ≤0.30 轨　用　钢 GB/11264 牌号 化 学 成 份 % C Si Mn P S Cr 50Q 0.35-0.60 0.15-0.35 ≥0.40 ≤0.045 ≤0.050 ≤0.40 55Q 0.50-0.60 0.15-0.35 0.60-0.90 ≤0.045 ≤0.050 ≤0.40 汽 车 大 梁 用 钢 (太规) 牌号 化 学 成 份 % C Si Mn P S Ti Nb 10TiL ≤0.14 0.10-0.30 0.50-0.90 ≤0.035 ≤0.035 0.07-0.20 T420L 0.07-0.11 ≤0.30 0.70-0.90 ≤0.020 ≤0.010 0.006-0.012 T440L 0.07-0.11 ≤0.30 0.80-1.00 ≤0.020 ≤0.010 0.008-0.015 T510L 0.08-0.12 ≤0.30 1.20-1.40 ≤0.020 ≤0.010 0.010-0.020 汽 车 轴 管 用 钢 (太规) 牌号 化 学 成 份 % C Si Mn P S Nb 440QZ ≤0.12 ≤0.50 ≤1.30 ≤0.30 ≤0.025 ≤0.04 480QZ 0.09-0.14 ≤0.20 0.90-1.20 ≤0.20 ≤0.015 ≥0.005 焊 瓶 用 钢 (太规) 牌号 化 学 成 份 % C Si Mn P S AL V HP295 0.13-0.18 ≤0.10 0.70-1.00 ≤0.025 ≤0.020 ≥0.015 HP325 0.16-0.20 ≤0.10 1.20-1.50 ≤0.020 ≤0.018 ≥0.015 HP345 0.12-0.18 0.10-0.30 0.80-1.40 ≤0.030 ≤0.030 ALS≥0.015 0.01-0.03 济钢标 集 装 箱 板 钢 (太规) 牌号 化 学 成 份 % C Si Mn P S Cr Ni Cu SPA-H 0.06-0.11 0.30-0.60 0.30-0.50 0.07-0.12 ≤0.025 0.40-0.60 0.15-0.40 0.25-0.35 管 线 钢 (太规) 牌号 化 学 成 份 % C Si Si Mn P P S Ti AL NiCrCu X42 0.06-0.12 0.15-0.30 0.90-1.25 ≤0.030 ≤0.030 ≥0.02 ≥0.02 X46 0.07-0.12 0.15-0.35 0.90-1.25 ≤0.020 ≤0.010 ≥0.02 X52 0.08-0.12 0.20-0.35 1.10-1.35 ≤0.020 ≤0.010 ≥0.02 ≤0.10 X60 0.06-0.12 0.15-0.40 1.20-1.60 ≤0.030 ≤0.020 ≥0.02 0.02-0.06 热 轧 带 钢 (太规) 牌号 化 学 成 份 % C Si Mn P S AL SPAC ≤0.08 ≤0.03 0.20-0.40 ≤0.020 ≤0.020 ≤0.02