| 牌號 | 化學成分(質量分數)(%) | |||||||
| C | si | Mn | P | S | Cr | Ni | Cu | |
| ≤ | ||||||||
| 05F | ≤O.06 | ≤0.03 | ≤O.40. | O.035 | 0.040 | O.10 | O.25 | 0.25 |
| 08F | O.05~0.11 | ≤0.03 | 0.25~0.50 | 0.035 | O.040 | O.10 | O.25 | O.25 |
| 08 | O.05~O.12 | O.17~O.37 | O.35~0.65 | O.035 | O.040 | O.10 | O,25 | O.25 |
| 10F | 0.07~O.14 | ≤O.07 | 0.25~0.50 | O.035 | O.040 | O.15 | O.25 | 0.25 |
| 10 | O.07~0.14 | O.17~O.37 | 0.35~O.65 | O.035 | 0.040 | O.15 | O.25 | O.25 |
| 15F | 0.12~O.19 | ≤O.07 | O.25~O.50 | 0.035 | O.040 | 0.25 | 0.25 | 0.25 |
| 15 | 0.12~0.19 | O.17~O.37 | 0.35~O.65 | O.035 | 0.040 | 0.25 | 0.25 | O.25 |
| 20F | O.17~O.24 | ≤O.07 | O.25~O.50 | O.035 | 0.040 | 0.25 | 0.25 | 0.25 |
| 20 | O.17~O.24 | O.17~O.37 | O.35~0.65 | O.035 | O.040 | O.25 | O.25 | 0.25 |
| 25 | O.22~O.30 | 0.17~O.37 | 0.50~O.80 | 0.035 | 0.040 | O.25 | 0.25 | O.25 |
| 30 | 0.27~O.35 | O.17~0.37 | O.50~O.80 | O.035 | 0.040 | 0.25 | O.25 | 0.25 |
| 35 | 0.32~O.40 | O.17~O.37 | 0.50~O.80 | O.035 | O.040 | 0.25 | 0.25 | 0.25 |
| 40 | O.37~0,45 | 0.17~O.37 | O.50~O.80 | 0.035 | O.040 | 0.25 | 0.25 | 0.25 |
| 45 | O.42~O.50 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.040 | 0.25 | O.25 | O.25 |
| 50 | O.47~O.55 | 0.17~O.37 | 0.50~O.80 | O.035 | O.040 | O.25 | 0.25 | 0.25 |
| 55 | O.52~O.60 | O.17~O.37 | 0.50~0.80 | O,035 | O.040 | O.25 | 0.25 | O.25 |
| 60 | O.57~O.65 | O.17~O.37 | O.50~O.80 | 0.035 | O.040 | O.25 | 0.25 | O.25 |
| 65 | 0.62~O.70 | 0.17~O.37 | O.50~O.80 | O.035 | O.040 | 0.25 | 0.25 | O.25 |
| 70 | O.67~0.75 | 0.17~0.37 | 0.50~O.80 | O.035 | 0.040 | O.25 | O.25 | O.25 |
| 20Mn | O.17~0.24 | 0.17~0.37 | O.70~1.00 | O.035 | O.040 | 0.25 | 0.25 | 0.25 |
| 25Mn | 0.22~0.30 | 0.17~0.37 | O.70~1.00 | 0.035 | 0.040 | O.25 | O.25 | 0.25 |
| 30Mn | 0.27~0.35 | O.17~O.37 | O.70~1.00 | O.035 | O.040 | O.25 | O.25 | 0.25 |
| 40Mn | 0.37~O.45 | 0.17~O.37 | 0.70~1.00 | O.035 | O.040 | 0.25 | 0.25 | O.25 |
| 50Mn | O.48~O.56 | 0.17~0.37 | O.70~1.oo | O.035 | 0.040 | O.25 | 0.25 | O.25 |
| 60Mn | 0.57~O.65 | O.17~O.37 | O.70~1.00 | 0.035 | O.040 | O.25 | 0.25 | O.25 |
| 65Mn | 0.62~0.70 | O.17~0.37 | O.90~1.20 | 0.035 | O.040 | 0.25 | O.25 | 0.25 |
| 牌號 | 抗拉強度 ób/MPa | 伸長率 δ5(%) | 牌號 | 抗拉強度 ó b/MPa | 伸長率 δ 5(%) |
| ≥ | ≥ | ||||
| 08F | 315 | 34 | 50 | 625 | 16 |
| 08 | 325 | 33 | 55 | 645 | 13 |
| 10F | 325 | 32 | 60 | 675 | 12 |
| lO | 335 | 32 | 65 | 695 | 10 |
| 15F | 355 | 30 | 70 | 715 | 9 |
| 15 | 370 | 30 | 20Mn | 450 | 24 |
| 20F | 380 | 27 | 25Mn | 490 | 22 |
| 20 | 410 | 28 | 30Mn | 540 | 20 |
| 25 | 450 | 24 | 40Mn | 590 | 17 |
| 30 | 490 | 22 | 50Mn | 650 | 13 |
| 35 | 530 | 20 | 60Mn | 695 | ll |
| 40 | 570 | 19 | 65Mn | 735 | 9 |
| 45 | 600 | 17 | |||
