A 537 CL 1 (ASTM A537 Class 1) refers to a normalized carbon-manganese-silicon steel plate used for fusion-welded pressure vessels and boilers, offering good strength and toughness for moderate temperatures, commonly in oil, gas, and petrochemical industries.
Key Characteristics
Material: Carbon-Manganese-Silicon Steel.
Heat Treatment: Normalized, providing enhanced strength.
Application: Pressure vessels, tanks (API 650/620), boilers, and related structures.
Properties: Good strength (Yield min 345 MPa / 50 ksi) and moderate-to-low-temperature toughness, suitable for fusion welding.
Industries: Oil & Gas, Petrochemical, Power Generation.
Chemical Composition of ASTM A537 Class 1
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|
| ≤ 40 mm | > 40 mm | |||||||||
| A537 Class 1 | 0.24 | 0.15/0.50 | 0.70/1.35 | 1.00/1.60 | 0.035 | 0.035 | 0.025 | 0.080 | 0.25 | 0.35 |
Mechanical Properties of ASTM A537 Class 1
| Grade | Yield (MPa) | Tensile (MPa) | Elongation | Thickness | |
|---|---|---|---|---|---|
| A50mm | A200mm | ||||
| A537 Class 1 | 345 | 485/620 | 22% | 18% | ≤ 65 |
| 310 | 450/585 | 22% | 18% | > 65 ≤ 100 | |
Applications of ASTM A537 Class 1 Carbon Steel Plate
The material is a normalised steel which is heat treated and as a consequence displays greater yield and tensile strength than the more standard ASTM A516 grades. The steel is ideal for use in pressurised service both in boilers and pressure vessels and Masteel UK Limited supplies A537 Class 1 plates to the world's leading fabricators who in turn serve the Oil, Gas and Petrochemical industry.
If you have project requirements for A 537 CL 1 we welcome your inquiry. GNEE maintains a large inventory of commonly used high strength steel grades for your selection.For detailed mechanical properties, chemical composition, and technical data, as well as free samples, please contact our factory immediately. We offer competitive prices, stable quality, and professional service. Email:beam@gneesteelgroup.com.
1.What is a 537 cl 1 material?
A 537 Cl 1 (ASTM/ASME SA537 Class 1) is a heat-treated carbon-manganese-silicon steel plate for fusion-welded pressure vessels, known for higher strength and toughness than basic carbon steels, used in oil, gas, and petrochemical applications requiring moderate to lower temperatures with excellent notch resistance after normalization.
2.What are the properties of a 537 cl 1 material?
A537 Class 1 is a normalized carbon-manganese-silicon steel plate for welded pressure vessels, known for good strength and toughness, with minimum yield strength of 50 ksi (345 MPa), tensile strength of 70-90 ksi (485-620 MPa), and elongation around 22%, suitable for moderate temperatures and low-temperature impact resistance in industries like oil, gas, and power.
3.What is the difference between A537 Class 1 and Class 2?
ASTM A537 Class 1 and Class 2 differ primarily in their heat treatment and mechanical properties, with Class 2 offering higher strength (60 ksi min yield) than Class 1 (50 ksi min yield) due to being quenched and tempered, while Class 1 is normalized; Class 2 is for more demanding high-pressure/temperature applications needing toughness, whereas Class 1 suits general use, balancing cost, weldability, and strength.