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| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Yield stress (Mpa) | Tensile stress (Mpa) | Elongation (%) | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 | ≦0.15 |
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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(%) | Yield stress (Mpa) | 2.65-3.35 | 0.8-1.0 | ≧315 | SFVA-F21B | CNS | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 2.65-3.35 | 0.8-1.0 | ≧315 | SFVA-F21B | JIS | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 2.65-3.35 | 0.8-1.0 | ≧315 | F21 | ASTM | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.025 | ≦0.025 | 2.65-3.35 | 0.8-1.0 | ≧315 |
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| 10CrMo-9-10 | SFVA-F22B | F21A | LF5 | SFVA-F21B | SFVA-F22A | 12CrMo-19-5 | F22 | SFVAF12 | F22A | SFVAF9 | F22 Class 3 | SFVAF2 | SFVAF5C | X12CrMo7 | SFVAF12 | SFVAF5D | SFVAF5D |
| - | BC7C | SMn420H | AlBC1 | X7CrNiA1-17-7 | 30CrMnSi | C3604BE/C3604BD | 5052 | CuSn6 | AC2A |