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Grade | C | Mn | P max | S max | Si max | Cr | Mo | Cu max | Ni max | V max | Ti | B | Co |
SA542 Type B | 0.11-0.15 | 0.30-0.60 | 0.015 | 0.015 | 0.50 | 2.00-2.50 | 0.90-1.00 | 0.25 | 0.25 | 0.02 | - | - | - |
Class | Tensile strength Rm MPa | Yield strength ReH MPa min | Elongation A% min in 50mm |
SA542 Type B Class 1 | 720-860 | 585 | 14 |
SA542 Type B Class 2 | 790-930 | 690 | 13 |
SA542 Type B Class 3 | 655-795 | 515 | 20 |
SA542 Type B Class 4 | 585-760 | 380 | 20 |
SA542 Type B Class 4a | 585-760 | 415 | 18 |
Other grades of steel plates for pressure vessel and boiler equipments in standard ASTM A542/A542M and ASME SA542/SA542M:
A542 Type A pressure vessel steel plates,
A542 Type B pressure vessel steel plates,
A542 Type C pressure vessel steel plates,
A542 Type D pressure vessel steel plates,
A542 Type E pressure vessel steel plates,
SA542 Type A pressure vessel steel plates,
SA542 Type C pressure vessel steel plates,
SA542 Type D pressure vessel steel plates,
SA542 Type E pressure vessel steel plates