ASTM A204 Grade A boiler plate is used in fabricators serving industry, especially in the oil, gas and chemical supply markets.
ASTM A204 Grade B boiler plate chemical composition:
|
Grade |
C |
Mn |
P |
S |
Si |
Mo |
|
A204 Grade B |
0.20-0.27 |
0.98 |
0.025 |
0.025 |
0.13-0.45 |
0.41-0.64 |
ASTM A204 Grade B pressure vessel steel mechanical properties:
|
Grade |
Tensile Strength MPa(ksi) |
Yield Strength MPa(ksi) |
% Elongation in 8 in.(200mm) min |
% Elongation in 2 in.(50mm) min |
|
A204 Grade B |
485-620(70-90) |
≥275(40) |
≥17 |
≥21 |
The A204 Grade B boiler plate maximum thickness of A204 Grade B Alloy steel plate plates is limited only by the capacity of the composition to meet the specified mechanical property requirements, however, current practice normally limits the maximum thickness of A204 Grade B pressure vessel steel plates furnished under 150 mm.
A204 GR.B alloy steel plates is a kind of steel which with Cr, Mo, and mainly used for pressure vessels. The grade A204 GR.B is according to ASTM standard which with the yield strength of 220 Mpa.
