牌号 | C | Si | Mn | P | S | Ni | Cr | Cu | Ni+Cr |
S35C | 0.32-0.38 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S38C | 0.35-0.41 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S40C | 0.37-0.43 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S43C | 0.40-0.46 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S45C | 0.42-0.48 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S48C | 0.45-0.51 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S50C | 0.47-0.53 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S53C | 0.50-0.56 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
S55C | 0.52-0.58 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.035 | ≤0.20 | ≤0.20 | ≤0.30 | ≤0.35 |
牌号 | 屈服强度MPa | 抗拉强度MPa | 伸长率A% | 断面收缩率% | 冲击功Akv/J | 硬度(未热处理) |
S35C | ≥315 | ≥530 | ≥20 | ≥45 | ≥55 | ≤197HB |
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