SA537 CL1/CL2 low alloy steel plate is a heat-treated carbon-manganese-silicon pressure vessel steel plate used for boilers, pressure vessels, storage tanks and structural pressure equipment. Class 1 is normally supplied normalized, while Class 2 is quenched and tempered to achieve higher strength. It is selected for applications requiring improved strength, toughness and pressure vessel quality.
Materials can be cut to required sizes according to customer specifications or project needs.
Different surface finishes can be supplied according to product type and application requirements.
Processing services such as cutting, machining, heat treatment or surface finishing can be arranged upon request.
Products are packed for international transportation with flexible delivery support for global buyers.
For use in medium- and low-temperature pressure vessels, storage tanks, and welded pressure-bearing structures.
Suitable for pressure vessel shells, storage tanks, boiler components, petrochemical equipment, gas storage equipment, heat exchanger structural parts, etc. CL1 and CL2 grades can be used for different pressure ratings based on strength and heat treatment requirements.| Item | Typical Information |
| Product Name | SA537 CL1 / CL2 Low Alloy Steel Plate |
| Equivalent / Standard | ASTM A537 / ASME SA537 Class 1, Class 2 |
| Product Form | Plate, cut plate, processed plate |
| Supply Condition | Class 1 normalized; Class 2 quenched and tempered |
| MOQ | Usually 1 plate / 1 ton, negotiable by stock and thickness |
| Application | Pressure vessels, boilers, tanks, heat exchangers |
| Grade | Tensile Strength | Yield Strength | Elongation | Note |
| SA537 Class 1 | Typically about 485–620 MPa | Typically ≥345 MPa | Standard-dependent | Normalized |
| SA537 Class 2 | Typically about 550–690 MPa | Typically ≥415 MPa | Standard-dependent | Quenched and tempered |
| Grade | C | Mn | Si | P | S | Note |
| SA537 CL1/CL2 | Standard-controlled | Mn-Si based | Standard-controlled | Low max | Low max | Exact limits depend on thickness and specification edition |
Q: How long is the delivery time for SA537 steel plate?
A: Officially, it is within 7 days for stock sizes. Actually, we can deliver within 3 days for in‑stock SA537 plates. Customized products or non‑standard size products would be taken 10‑30 days to deliver, depend on the production cycle. Generally, most of the products finished and delivered within 20 days.
Q: Can you supply mill test certificate for SA537 CL1 / CL2 plates?
A: Yes, we can. Each batch of SA537 steel plate will come with official mill test certificate, which includes full chemical composition and mechanical property data to meet ASME project requirements.
Q: What cutting service can you offer for SA537 steel plate?
A: We support plasma cutting and flame cutting for SA537 pressure vessel plates. We can cut plates into your required dimensions to reduce your secondary processing work.
