A537 Pressure Vessel Plate
The ASTM A537 specification covers heat-treated carbon steel plates for pressure vessels.
ASTM A537 Grade 1 plates are supplied in the normalised condition, while Grade 2 plates are quenched and tempered. ASTM A537 carbon steel plates have higher tensile and yield strengths than pressure vessel plates supplied under ASTM A516.
ASTM A537 Grade 1 carbon steel plate is designed for pressure vessel applications.
ASTM A537 Grade 2 steel is a higher yield and tensile strength material used in the manufacture of pressure vessels and steel boilers.
A537 class 1 boiler steel chemical composition:
| C | 0.24 |
| Si | 0.15/0.50 |
Mn
< 40mm | 0.70/1.35 |
Mn
> 40mm | 1.00/1.60 |
| P | 0.035 |
| S | 0.035 |
| Cr | 0.25 |
| Mo | 0.80 |
| Ni | 0.25 |
| Cu | 0.35 |
A537 Class 2 pressure vessel quality steel chemical composition:
| C | 0.24 |
| Si | 0.15/0.50 |
Mn
< 40mm 870 | 0.70/1.35 |
Mn
> 40mm | 1.00/1.60 |
| P | 0.035 |
| S | 0.035 |
| Cr | 0.25 |
| Mo | 0.80 |
| Ni | 0.25 |
| Cu | 0.35 |
A537 Class 1 boiler quality plates mechanical property:
| YIELD (MPA) | TENSILE (MPA) | ELONGATION A50MM | ELONGATION A200MM | THICKNESS |
| 345 | 485-620 | 22% | 18% | < 65 |
| 310 | 450/585 | 22% | 18% | > 65 < 100 |
A537 Class 2 pvq plate mechanical property:
| YIELD (MPA) | TENSILE (MPA) | ELONGATION A50MM | ELONGATION A200MM | THICKNESS |
| 415 | 550/690 | 22% | – | < 65 |
| 380 | 515/655 | 22% | – | > 65 < 100 |
| 315 | 485/620 | 20% | – | > 100 < 150 |
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