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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 | ≧205 | SFVA-F21A | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 2.65-3.35 | 0.8-1.0 | ≧205 | SFVA-F21A | JIS | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 2.65-3.35 | 0.8-1.0 | ≧205 | F21A | ASTM | ≦0.15 | ≦0.5 | 0.3-0.6 | ≦0.03 | ≦0.03 | 2.65-3.35 | 0.8-1.0 | ≧205 |
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| SFVAF5A | SFVAF5B | SFVAF2 | SFVA-F11B | 10CrMo-9-10 | SFVA-F22B | F21A | LF5 | SFVA-F21B | SFVA-F22A | 12CrMo-19-5 | F22 | SFVAF12 | F22A | SFVAF9 | F22 Class 3 | SFVAF2 | SFVAF2 |
| Class 4 | T9 | 40CrMn-Mo7 | W2Mo9Cr-4VCo8 | AZ63A | Type D-2B | Gr.WCC | S58C | 9SMnPb36 | AZ91A |