Product: ASTM A204 Gr.A is a kind of Mo-alloy steel material used to fabric high temperature pressure vessels. Obviously, A204 this property is based on it's Mo composition. ASTM A-204/A-204M A204 has three grades or levels--Grade A/B/C. A204 steel grade specification covers molybdenum alloy, intended particularly of welded boilers and others pressure vessels steel plate in A204 Gr. A,A204 Gr .B and A204 Gr .C.
Key words: A204 Gr.A, ASTM A204 Gr.A,ASTM A204 Gr A steel plate,ASTM A204 Gr A steel plate for pressure vessels, A204 Gr.A Mo-alloy steel,A204 Gr. A fabric high temperature pressure vessels.
ASTM A204 Gr.A steel chemical composition (%) :
|
Composition |
Type |
Thickness(mm) |
A |
|
C≤ |
Heatanalyse Productanalyse |
≤25 |
0.18 |
|
|
|
＞25~50 |
0.21 |
|
|
|
＞50~100 |
0.23 |
|
|
|
＞100 |
0.25 |
|
Mn≤ |
Heatanalyse |
- |
0.90 |
|
|
Productanalyse |
- |
0.98 |
|
P≤,S≤ |
Heatanalyse |
- |
0.035 |
|
|
Productanalyse |
- |
0.035 |
|
Si |
Heatanalyse |
- |
0.15~0.40 |
|
|
Productanalyse |
- |
0.13~0.45 |
|
Mo |
Heatanalyse |
- |
0.45~0.60 |
|
|
Productanalyse |
- |
0.41~0.64 |
ASTM A204 Gr.A steel Mechanical Properties:
|
Grade |
TensileStrengthkis [MPa] |
YieldStrengthmin,kis [MPa] |
Elongationin8in.[200mm], min,% |
Elongationin2in.[50mm], min,% |
|
A204GrA |
65-85[450-585] |
37[255] |
19 |
23 |
ASTM A204 Gr.A steel chief application:
ASTM A204 Gr.A pressure vessel steel is 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.
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Related link :A204 Gr.B,A204 Gr.C,ASTM A204
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