材质 | C | Si | Mn | P | S | Cr | Ni | Cu |
50Mn | 0.48-0.56 | 0.17-0.37 | 0.7-1 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.3 | ≤0.25 |
50Mn2 | 0.47-0.55 | 0.17-0.37 | 1.4-1.8 | ≤0.025 | ≤0.025 | ≤0.3 | ≤0.3 | ≤0.25 |
材质 | 屈服强度 | 抗拉强度 | 断后延伸率 | 断面收缩率 | 冲击吸收功 |
50Mn | ≥390Mpa | ≥645Mpa | ≥13% | ≥40% | ≥31J |
50Mn2 | ≥785Mpa | ≥930Mpa | ≥9% | ≥40% | ≥39J |