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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