JIS G3106
牌 号 | 尺寸/mm | 化学成分(质量分数)/% | |||||
C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | 碳当量,CE ≤ | ||
SM 400 A | ≤50 | 0.23 | | ≥2.5×C | 0.035 | 0.035 | |
50~200 | 0.25 | | ≥2.5×C | 0.035 | 0.035 | | |
SM 400 B | ≤50 | 0.20 | 0.35 | 0.60~1.40 | 0.035 | 0.035 | 各牌号: |
50~200 | 0.22 | 0.35 | 0.60~1.40 | 0.035 | 0.035 | 0.44(≤50 mm) | |
SM 400 C | ≤100 | 0.18 | 0.35 | 1.40 | 0.035 | 0.035 | |
SM 490 A | ≤50 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | 0.47(50~100 mm) |
50~200 | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | | |
SM 490 B | ≤50 | 0.18 | 0.55 | 1.60 | 0.035 | 0.035 | |
50~200 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | | |
SM 490 C | ≤100 | 0.18 | 0.55 | 1.60 | 0.035 | 0.035 | |
SM 490 YA | ≤100 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | |
SM 490 YB | ≤100 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | |
SM 520 B | ≤100 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | |
SM 520 C | ≤100 | 0.20 | 0.55 | 1.60 | 0.035 | 0.035 | |
SM 570 | ≤100 | 0.18 | 0.55 | 1.60 | 0.035 | 0.035 | |
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