大型铸件低合金钢化学成分和性能 | 钢 号 | 化 学 成 份 | 力学性能(不小于) | 硬度 | C | Si | Mn | P ≤ | S ≤ | Cr | Ni | Mo | 其 他 | σb /MPa | σs或σ0.2 /MPa | δ (%) | ψ (%) | AKV /J | ZG30Mn | 0.27~0.34 | 0.30~0.50 | 1.20~1.50 | 0.035 | 0.035 | - | - | - | - | ≥558 | 300 | 18 | 30 | - | 163 | ZG40Mn | 0.35~0.45 | 0.30~0.45 | 1.20~1.50 | 0.035 | 0.035 | - | - | - | - | ≥640 | 295 | 12 | 30 | - | - | ZG40Mn2 | 0.35~0.45 | 0.20~0.40 | 1.60~1.80 | 0.035 | 0.035 | - | - | - | - | ≥590 | 395 | 20 | 55 | - | 179 | ZG50Mn2 | 0.45~0.55 | 0.20~0.40 | 1.50~1.80 | 0.035 | 0.035 | - | - | - | - | ≥785 | 445 | 18 | 37 | - | - | ZG20Mn (ZG20SiMn) | 0.12~0.22 | 0.60~0.80 | 1.00~1.30 | 0.035 | 0.035 | - | ≤0.40 | - | - | ≥510 | 295 | 14 | 30 | 39 | 156 | ZG35Mn (ZG35SiMn) | 0.30~0.40 | 0.60~0.80 | 1.10~1.40 | 0.035 | 0.035 | - | - | - | - | ≥570 | 345 | 12 | 20 | 24 | - | ZG35SiMnMo | 0.32~0.40 | 1.10~1.40 | 1.10~1.40 | 0.035 | 0.035 | | - | 0.20~0.30 | Cu≤0.30 | ≥640 | 395 | 12 | 20 | 24 | | ZG35CrMnSi | 0.30~0.40 | 0.50~0.75 | 0.90~1.2 | 0.035 | 0.035 | 0.50~0.80 | - | | | ≥690 | 345 | 14 | 30 | | 217 | ZG20MnMo | 0.17~0.23 | 0.20~0.40 | 1.10~1.40 | 0.035 | 0.035 | | - | 0.20~0.30 | Cu≤0.30 | ≥490 | 295 | 16 | - | 39 | 156 | ZG55CrMnMo (ZG5CrMnMo) | 0.50~0.60 | 0.25~0.60 | 1.20~1.60 | 0.035 | 0.035 | 0.60~0.90 | - | 0.20~0.30 | Cu≤0.30 | (不规定) | ZG40Cr1 (ZG40Cr) | 0.35~0.45 | 0.20~0.40 | 0.50~0.80 | 0.035 | 0.035 | 0.80~1.10 | - | - | - | ≥630 | 345 | 18 | 26 | - | 212 | ZG34Cr2Ni2Mo (ZG34CrNiMo) | 0.30~0.37 | 0.30~0.60 | 0.60~1.00 | 0.035 | 0.035 | 1.40~1.70 | 1.40~1.70 | 0.15~0.35 | - | 950~1000 | 700 | 12 | - | 32 | 240~290 | ZG20CrMo | 0.17~0.25 | 0.20~0.45 | 0.50~0.80 | 0.035 | 0.035 | 0.50~0.80 | - | 0.40~0.60 | - | ≥460 | 245 | 18 | 30 | 24 | - | ZG35Cr1Mo (ZG35CrMo) | 0.30~0.37 | 0.30~0.50 | 0.50~0.80 | 0.035 | 0.035 | 0.80~1.20 | - | 0.20~0.30 | - | 740~880 | 510 | 12 | - | 27 | - | ZG42Cr1Mo (ZG42CrMo) | 0.38~0.45 | 0.30~0.60 | 0.60~1.00 | 0.035 | 0.035 | 0.80~1.20 | - | 0.20~0.30 | - | 690~830 | 490 | 11 | - | 21 | 200~250 | ZG50CrMo (ZG50CRMo) | 0.46~0.54 | 0.25~0.50 | 0.50~0.80 | 0.035 | 0.035 | 0.90~1.20 | - | 0.15~0.25 | - | 740~880 | 520 | 11 | - | 34 | 200~260 | ZG65Mn | 0.60~0.70 | 0.17~0.37 | 0.90~1.20 | 0.035 | 0.035 | - | - | - | - | (不规定) | ZG28NiCrMo | 0.25~0.30 | 0.30~0.60 | 0.60~0.90 | 0.035 | 0.035 | 0.35~0.85 | 0.40~0.80 | 0.35~0.55 | - | ≥630 | 420 | 20 | 40 | - | - | ZG30NiCrMo | 0.25~0.35 | 0.30~0.60 | 0.70~1.00 | 0.035 | 0.035 | 0.60~0.90 | 0.60~1.00 | 0.35~0.50 | - | ≥730 | 590 | 17 | 35 | - | - | ZG35NiCrMo | 0.30~0.37 | 0.60~0.90 | 0.70~1.00 | 0.035 | 0.035 | 0.60~0.90 | 0.60~0.90 | 0.40~0.50 | - | ≥830 | 660 | 14 | 30 | 碳素精密铸钢和低合金精密铸钢化学成分和性能 | 钢 号 | 化 学 成 份 | 力学性能(不小于) | 硬度 | ASTM | ICI | C | Si | Mn | P ≤ | S ≤ | Cr | Ni | Mo | 其 他 | σb /MPa | σs/MPa | δ (%) | ψ (%) | AKV /J | 1A | 1020 | 0.15~0.25 | 0.20~1.00 | 0.20~0.60 | 0.04 | 0.045 | - | - | - | - | 414 | 276 | 24 | | | | 2A 2Q | 1030 | 0.25~0.35 | 0.2~1.00 | 0.70~1.00 | 0.04 | 0.045 | - | - | - | - | 448 586 | 310 414 | 25 10 | | | | 3A 3Q | 1040 | 0.35~0.45 | 0.20~1.00 | 0.70~1.00 | 0.04 | 0.045 | - | - | - | - | 517 689 | 331 621 | 25 10 | | | | 4A 4Q | 1050 | 0.45~0.55 | 0.20~1.00 | 0.70~1.00 | 0.04 | 0.045 | - | - | - | - | 621 862 | 345 689 | 20 5 | | | | 5N | 6120 | ≤0.30 | 0.20~0.80 | 0.70~1.00 | 0.04 | 0.045 | - | - | - | V 0.15~0.15 | 586 | 379 | 22 | | | | 6N | 4020 | ≤0.35 | 0.20~0.80 | 1.35~1.75 | 0.04 | 0.045 | - | - | 0.25~0.55 | - | 621 | 414 | 20 | | | | 7Q | 4130 | 0.25~0.35 | 0.20~0.80 | 0.40~0.70 | 0.04 | 0.045 | 0.80~1.10 | - | 0.15~0.25 | - | 1030 | 793 | 7 | | | | 8Q | 4140 | 0.35~0.45 | 0.20~0.80 | 0.70~1.00 | 0.04 | 0.045 | 0.80~1.10 | - | 0.15~0.25 | - | 1241 | 1000 | 5 | | | | 9Q | 4330 | 0.25~0.35 | 0.20~0.80 | 0.40~0.70 | 0.04 | 0.045 | 0.70~0.90 | 1.65~2.00 | 0.20~0.30 | - | 1030 | 793 | 7 | | | | 10Q | 4340 | 0.35~0.45 | 0.20~0.80 | 0.70~1.00 | 0.04 | 0.045 | 0.70~0.90 | 1.65~2.00 | 0.20~0.30 | - | 1241 | 1000 | 5 | | | | 11Q | 4620 | 0.15~0.25 | 0.20~0.80 | 0.40~0.70 | 0.04 | 0.045 | - | 1.65~2.00 | 0.20~0.30 | - | 827 | 689 | 10 | | | | 12Q | 6150 | 0.45~0.55 | 0.20~0.80 | 0.65~0.95 | 0.04 | 0.045 | 0.80~1.10 | - | - | V ≥0.15 | 1310 | 1172 | 4 | | | | 13Q | 8620 | 0.15~0.25 | 0.20~0.80 | 0.65~0.95 | 0.04 | 0.045 | 0.40~0.70 | 0.40~0.70 | 0.15~0.25 | - | 724 | 586 | 10 | | | | 14Q | 8630 | 0.25~0.35 | 0.20~0.80 | 0.65~0.95 | 0.04 | 0.045 | 0.40~0.70 | 0.40~0.70 | 0.15~0.25 | - | 1030 | 793 | 7 | | | | 宁波 |
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