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* SCM415(KS,JIS) Material comparison table
(Chromium molybdenum steels)
1. Chemical composition
| Code | KS | JIS |
| Material Grade |
SCM415 | SCM415 |
| C | 0.13~0.18 | 0.13~0.18 |
| Si | 0.15~0.35 | 0.15~0.35 |
| Mn | 0.60~0.85 | 0.60~0.85 |
| P | ≦0.030 | ≦0.030 |
| S | ≦0.030 | ≦0.030 |
| Ni | <0.25 | <0.25 |
| Cr | 0.90~1.20 | 0.90~1.20 |
| Mo | 0.15~0.30 | 0.15~0.30 |
| Cu | <0.30 | <0.30 |
| Remark | - | - |
(Referred to KS, JIS)
2. Mechanical property (SCM415)
| Heat Treatment |
yield point kgf/mm^2 (N/mm^2) |
tensile strength kgf/mm^2 (N/mm^2) |
elongation % |
contraction of area % |
hardness (HB) |
charpy impact value kgf.m/cm^2 (J/cm^2) |
| Quenching No.1 850~900℃ Oil cooling No.2 800~850℃ Oil cooling or After holding 925℃ 850~900℃ Oil cooling Tempering 150~200℃ Air cooling |
- | 85≦ (834)≦ |
16≦ | 40≦ | 235~321 | 7≦ (69)≦ |
(Referred to KS, JIS)
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