A537 class 3 is a steel grade under ASTM A537/A537M standard, shorten as A537CL3. A537 class 3 pressure vessel steel plate is usually delivered in quenched and tempered state. It is an ideal raw material for boilers and pressure vessels.
ASTM boiler grade A537 class 3 pressure vessel steel plate chemical composition:
| Grade | C | Mn | P | S | Si | Cu | Ni | Cr | Mo |
| A537 class 3 | 0.24 | 0.92-1.72 | 0.035 | 0.035 | 0.13-0.55 | 0.38 | 0.28 | 0.29 | 0.09 |
The mechanical properties of A537 class 3 steel plate at ambient temperature:
| Grade | Thickness(mm) | Min Yield (Mpa) | Tensile(MPa) | Elongation(%) |
| A537 class 3 | 8mm-65mm | Min 380Mpa | 550-690Mpa | 22% |
| 66mm-100mm | Min 345Mpa | 515-655Mpa | 22% | |
| 101mm-150mm | Min 275Mpa | 485-620Mpa | 20% |
Other trade names of A537 class 3 plate:
A537 plate
A537 steel
A537 class 3 steel
ASTM A537 steel
A537 carbon steel
A537 steel plate
ASTM A537 plate
A537 grade plate
The following A537 grades are also available:
ASTM A537 / ASME SA537 class 1 / A537CL1
ASTM A537 / ASME SA537 class 2 / A537CL2
A537 class 3 steel plate thickness is under 150 mm [6 inch]. A537CL3 steel is mainly used in the oil, gas and petrochemical industry.
Other pressure vessel steel plates we have are: A202, A203, A204, A285, A299, A302, A387, A515, A516, A517, A533, A537, A612, A662, EN10028-2, EN10028-3, EN10028-5, EN10028-6, JIS G3103, JIS G3115, GB713, GB3531, DIN 17155.
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