ASTM A204 pressure vessel plates (A204Gr.A, A204Gr.B, A204Gr.C) are available in three grades having different strength levels: Grade A; Grade B; and Grade C. The steel shall be killed. The ASTM A204 pressure vessel plates shall conform to the chemical requirements specified. Tension tests on plates shall conform to the requirements specified.
ASTM A204 Pressure Vessel Plates Chemical Composition (%, heat analysis)
| Material |
C max. |
Mn max. |
Si |
P max. |
S max. |
| A204Gr.A |
0.20 |
0.98 |
0.13-0.45 |
0.035 |
0.035 |
| A204Gr.B |
0.20 |
0.98 |
0.13-0.45 |
0.035 |
0.035 |
| A204Gr.C |
0.23 |
0.98 |
0.13-0.45 |
0.035 |
0.035 |
ASTM A204 Pressure Vessel Plates Mechanical Properties
| Material |
Tensile Strength(MPa) |
Yield Strength (MPa) |
% Elongation in 2 in.
(50mm) min |
Impacting Test Temperature(°C) |
| A204Gr.A |
450-585 |
255 |
21 |
-20,40,-60 |
| A204Gr.B |
485-620 |
275 |
21 |
-20,40,-60 |
| A204Gr.C |
515-655 |
295 |
20 |
-20,40,-60 |
ASTM A204 Pressure Vessel Plates Sizes and Dimension
Specifications: ASTM A204 / ASME SA204
Thickness: 6MM to 150MM
Specialize: Shim Sheet, Perforated Sheet, B. Q. Profile.
Length: 3000mm to 15000mm
Form: Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, plates
Finish:
Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Hardness: Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
A204Gr.A, A204Gr.B, A204Gr.C steel are molybdenum alloy, intended particularly of welded boilers and others pressure vessels steel plate.
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