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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
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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