ASTM A537 boiler steel plate pressure vessel steel sheet introduction:
ASTM A537 boiler steel plate pressure vessel steel sheet is heat-treated, carbon-manganese-silicon steel used in the applications of fusion welded pressure vessels and structures. ASTM A537 steel is a kind of low alloy steel that covers 3 grades (A537 class 1, A537 class 2, A537 class 3).
The maximum thickness of ASTM A537 boiler steel plate pressure vessel steel sheet is 4 in. [100 mm] for A537 class 1 and 6 in. [150 mm] for A537 class 2 and A537 class 3. A537 class 1 steel plate is available as normalized. A537 class 2 steel plate and A537 class 3 steel plate are available as quenched & tempered.
ASTM A537 boiler steel plate pressure vessel steel sheet chemical composition:
| Grade | Thickness (mm) | C. | Si | Mn | P. | S. | Cu. | Ni. | Cr. | Mo. |
| max | max | max | max | max | max | max | ||||
| ASTM A537 | ≤40mm | 0.24 | 0.15-0.50 | 0.70-1.35 | 0.035 | 0.035 | 0.35 | 0.25 | 0.25 | 0.08 |
| >40mm | 1.00-1.60 |
ASTM A537 boiler steel plate pressure vessel steel sheet mechanical properties:
| Grade | Thickness | Yield | Tensile | Elongation |
| A537 class 1 | mm | Min Mpa | Mpa | Min % |
| under 65 | 345 | 485-620 | 22 | |
| 65-100 | 310 | 450-585 | - | |
| 100-150 | - | - | 18 | |
| A537 class 2 | under 65 | 415 | 550-690 | 22 |
| 65-100 | 380 | 515-655 | 20 | |
| 100-150 | 315 | 485-620 | - | |
| A537 class 3 | under 65 | 380 | 550-690 | 22 |
| 66-100 | 345 | 515-655 | 20 | |
| 101-150 | 275 | 485-620 | - |
ASTM A537 steel equivalent grades:
Warning! Only for reference
| USA | China | JIS | Germany |
| ASTM/ASME | GB1591-88 | G3115 | DIN17155 |
| A537 | 16MnR | SPV36 | 19Mn5 |
ASTM A537 boiler steel plate pressure vessel steel sheet application:
ASTM A537 boiler steel plate pressure vessel steel sheets are used when yield and tensile strength of ASTM A516 can not meet the requirements of pressure services like boiler and pressure vessels in oil, gas, petroleum industries. ASTM A537 boiler steel plate pressure vessel steel sheet typical applications are API 650 and API 620 storage tanks, pressure vessels designed for moderate and lower-temperature service, requiring excellent notch toughness.
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