ASTM A204 GR.A is molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels. ASTM A204 GR.A alloy steel plates cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has the lowest strength and highest ductility compared to the other variants of ASTM A204 steel.
ASTM A204 Grade A bolier steel chemical composition:
|
Grade |
C |
Mn |
P |
S |
Si |
Mo |
|
A204 Grade A |
0.18-0.25 |
0.98 |
0.025 |
0.025 |
0.13-0.45 |
0.41-0.64 |
ASTM A204 Grade A pressure 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 A |
450-585(65-85) |
≥255(37) |
≥19 |
≥23 |
The maximum thickness of ASTM A204 Grade A bolier 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 A pressure steel plates furnished under 150 mm.
A204 Grade A pressure steel Plate in 40 mm and under in thickness are normally supplied in the as-rolled condition. The ASTM A204 Grade A bolier plates shall be normalized if over 40 mm.
Katalor supply our A204 GR.A alloy steel plates to various countries like Egypt, Venezuela, Pakistan, Vietnam, Germany and so on, if you are interested with our goods A204 Grade A bolier plates be free to let us know your requirements.
