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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
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A302 Grade B boiler steel plate
Steel Name: A302 Grade B boiler steel plate, A302 Grade B boiler steel sheet, A302 Grade B steel plate, A302 Grade B steel sheet, A302 Grade B pressure vessel steel plate
A302 Grade B boiler steel plate specification:
Steel Grade: A302 Grade B Steel Standard: ASTM A302/A302M
Thickness:6mm-450mm, Width:1200mm-4200mm, Length:3000mm-18000mm
A302 Grade B chemical composition (% ):
|
Composition |
Type |
Thickness (mm) |
B |
|
C ≤ |
Heat analyse |
≤25 |
0.20 |
|
|
Product analyse |
50~100 |
0.23 |
|
|
|
＞100 |
0.25 |
|
Mn ≤ |
Heat analyse |
- |
1.15~1.50 |
|
|
Product analyse |
- |
1.07~1.62 |
|
P ≤ |
Heat analyse |
- |
0.035 |
|
S ≤ |
Product analyse |
- |
0.035 |
|
Si |
Heat analyse |
- |
0.15~0.40 |
|
|
Product analyse |
- |
0.13~0.45 |
|
Mo |
Heat analyse |
- |
0.45~0.60 |
|
|
Product analyse |
- |
0.41~0.64 |
|
Ni |
Heat analyse |
- |
- |
|
|
Product analyse |
- |
- |
|
Grade |
Tensile strength kis [MPa] |
Yield strength min, kis [MPa] |
Elongation in 8 in. [200 mm], min, % |
Elongation in 2 in. [50 mm], min, % |
|
A302 Grade B |
80-100 [550-690] |
50 [345] |
15 |
18 |
A302 Grade B boiler steel surface treatment: Shot blasting and painting or coated.
A302 Grade B boiler steel application:
ASTM A302 Grade B steel plates are widely used in petroleum, chemical industry, power station, boiler, etc, used to make the reactor, heat exchanger, separator, spherical tank, liquefied gas, nuclear reactor pressure vessel, boiler steam drum steam, liquefied petroleum, hydropower station, high pressure pipe.
A302 Grade B boiler steel test: Ultrasonic examination,Normalized,Quenched and Te CC and Third party inspections by end user.
As a A302 Grade B boiler steel plate supplier in China, we keep many tons A302 Grade B boiler steel plate in stock every month , any need in A302 Grade B boiler steel plate, please feel free to contact us!