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The demand for reliable materials in cryogenic service applications has increased significantly with the rapid growth of LNG terminals, industrial gas storage facilities, and low-temperature pressure vessels.2026-06-24
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As the global demand for liquefied natural gas (LNG) continues to grow, the need for reliable materials for cryogenic storage systems has become increasingly important.2026-06-18
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For engineers specifying materials for cryogenic pressure vessels, finding the balance between strength and ductility at sub-zero temperatures is challenging.2026-06-12
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In industries where equipment must operate reliably under freezing or cryogenic conditions, material selection becomes a matter of safety and structural integrity.2026-06-01
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While both ASTM A203 Grade B and ASTM A106 Grade B serve critical roles in industrial applications, they are fundamentally different in composition, purpose, and performance.2026-06-01
ASTM A542/A542M A542CL1 steel, ASTM A542/A542M A542CL2 steel
ASTM A542/A542M specification covers two types of 21⁄4Cr-1 Mo and three types of Cr-Mo-V alloy steel plates for use in the quenched-and-tempered condition, intended for the fabrication of welded pressure vessels and components. This standard covers ASTM A542/A542M A542CL1 steel, ASTM A542/A542M A542CL2 steel, ASTM A542/A542M A542CL4 steel and ASTM A542/A542M A542CL4a steel. These steels are widely used in the fabrication of boilers and pressure vessels in industries such as shipbuilding, petrochemical and manufacturing.
ASTM A542/A542M specification
ASTM A542/A542M A542CL1 steel and ASTM A542/A542M A542CL2 steel Chemical Composition:
|
Grade |
Standard |
C |
Mn |
S |
Si |
|
A542CL1 |
A542/A542M |
0.18 |
0.25-0.66 |
0.025 |
0.50 |
|
A542CL2 |
A542/A542M |
0.09-0.18 |
0.25-0.66 |
0.015 |
0.50 |
ASTM A542/A542M A542CL1 steel and ASTM A542/A542M A542CL2 steel Mechanical Property:
|
Grade |
Tensile strength, ksi [MPa] |
Yield strength, min,A ksi [MPa] |
Elongation in 2 in. [50 mm], min, %B |
|
A542CL1 |
105–125 [725–860] |
85 [585] |
14 |
|
A542CL2 |
115–135 [795–930] |
100 [690] |
13 |
ASTM A542/A542M A542CL1 steel and ASTM A542/A542M A542CL2 steel shall be heat treated by heating to a suitable austenitizing temperature, holding for a sufficient period of time to attain uniform temperature throughout the thickness, and quenching in a suitable liquid medium by spraying or immersion.
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