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| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Yield stress (Mpa) | Tensile stress (Mpa) | Elongation (%) | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 | ≦0.25 |
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Alloy Steel Forgings for Pressure Vessels for High Temperature Service
| Steel Type | Country Code | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | 4.0-6.0 | 0.45-0.65 | SFVAF5D | CNS | ≦0.25 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 4.0-6.0 | 0.45-0.65 | SFVAF5D | JIS | ≦0.25 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 4.0-6.0 | 0.45-0.65 | F5A | ASTM | ≦0.25 | ≦0.5 | ≦0.6 | ≦0.04 | ≦0.03 | 4.0-6.0 | 0.45-0.65 |
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| SKS1 | F1 | 13CrMo-4-4 | F9 | X130W5 | 120W4 | W | F12 Class 2 | F21 | SFVAF1 | F11A Class 3 | SFVAF9 | 32Cr-Mo12 | SFVA-F22B | F5A | SFVAF5B | SKS21 | SFVAF5D | SFVAF5A | SFVAF5A |
| Class 4 | SQV1B | 40NiCr6 | SKH54 | SEV245 | 9260 | 45Mn2 | SCPL31 | LD2 | A1100TE |