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ASTM A202 Grade B is a chromium-manganese-silicon low-alloy steel tailored for high-pressure, medium-temperature pressure vessel applications.2026-04-30
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ASTM A202 Grade A is a critical chromium-manganese-silicon low-alloy steel plate specifically designed for welded pressure vessels and boilers operating at medium temperatures.2026-04-30
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ASTM A202 Pressure Vessel Steel Material and Grades:
Alloy System: **Chromium-Manganese-Silicon (Cr-Mn-Si)** Low-Alloy Heat-Resistant Steel2026-04-17 -
ASTM A204/A204M Grade B molybdenum alloy steel plates for pressure vessels feature superior chemical composition and mechanical properties compared to Grade A2026-04-10
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As a molybdenum-alloy steel plate for pressure vessels under the ASTM A204/A204M standard, A204 Gr.A is a low-alloy, high-strength material specifically designed for service conditions involving moderate temperatures (≤400°C) and moderate-to-high pressure2026-03-31
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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