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| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 | 0.18-0.23 |
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Chromium Steels for Machine Structural use
| Steel Type | Standard | Country Code | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | ≦0.03 | 0.9-1.2 | ≦0.25 | SCr420 | 3231 | CNS | 0.18-0.23 | 0.15-0.35 | 0.60-0.85 | ≦0.03 | ≦0.03 | 0.9-1.2 | ≦0.25 | 20Cr | 3077 | GB | 0.18-0.24 | 0.17-0.37 | 0.40-0.70 | ≦0.035 | ≦0.03 | 0.9-1.2 | ≦0.25 | SCr420 | G4104 | JIS | 0.18-0.23 | 0.15-0.35 | 0.60-0.85 | ≦0.03 | ≦0.03 | 0.9-1.2 | ≦0.25 | 5120 | - | AISI | 0.17-0.22 | 0.15-0.30 | 0.7-0.9 | ≦0.035 | ≦0.03 | 0.9-1.2 | ≦0.25 |
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| SCr430 | SMnC420 | 5140 | SCr420H | 20MnCr5 | 5135H | SCr445 | 5115 | SCr440 | 41CrS4 | SCr430 | 5132 | SCr430H | 5140H | 37Cr4 | 35Cr | 15Cr3 | 15Cr | 5145 | 5145 |
| C53400 | SB480 | SFVC1 | PBC2 | SNB7 | GS-18Cr-Mo9-10 | C5212W | A3004P | H65 | C86500 |