ASME SA204 Gr.A is a kind of Mo-alloy steel material used to fabric high temperature pressure vessels. Obviously, SA204 this property is based on it's Mo composition. ASME SA-204/SA-204M SA204 has three grades or levels--Grade A/B/C. SA204 steel grade specification covers molybdenum alloy, intended particularly of welded boilers and others pressure vessels steel plate in SA204 Gr. A,SA204 Gr .B and SA204 Gr .C.
Steel Standard:ASME SA204/SA204M
Rolling Type:Boiler steel plate,Pressure vessel steel plate
Thickness:5mm-300mm
Width:1500mm-4200mm
Length:3000mm-18000mm
Heat Treatment:As Rolled/Normalised/Stress relieved
Mechnical property for SA204 GrA steel plate:
| Yield strength (≥Mpa) | Tensile strength (Mpa) | Elongation in ≥,% | |
| 255 | 450-585 | 200mm | 50mm |
| 19 | 23 | ||
Chemical composition for SA204 Grade A steel plate(Heat Analysis Max%)
| Main chemical elements composition of SA204 Grade A | ||||||
| Thickness(mm) | C | Si | Mn | P | S | Mo |
| T≤25 | 0.18 | 0.15-0.40 | 0.90 | 0.035 | 0.035 | 0.45-0.60 |
| 25<T≤50 | 0.21 | |||||
| 50<T≤100 | 0.23 | |||||
| T>100 | 0.25 | |||||
Application:
ASME SA204 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.
