SA 203 Grade B is a nickel alloy steel plate defined by the ASME SA-203/SA-203M standard, primarily used for constructing welded pressure vessels that operate in low-temperature environments.
Key Characteristics:
Material Type: Nickel Alloy Steel.
Application: Pressure Vessels, Boilers, Tanks.
Key Alloying Element: Nickel (Ni).
Performance: Good impact resistance at low temperatures (down to -101°C or -150°F).
Standard: ASME SA-203/SA-203M.
Chemical Composition
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SA203 Grade B Chemical Composition |
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Grade |
The Element Max (%) |
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C |
Si |
Mn |
P |
S |
|
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SA203 Grade B |
0.17 |
0.13-0.45 |
0.78-0.88 |
0.035 |
0.035 |
Mechanical Property
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Mechanical Property of SA203 Grade B steel plate |
SA203 Grade B |
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Tensile strength, kis [MPa] |
70-90[485-620] |
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Yield strength, min, kis [MPa] |
40 [275] |
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Elongation in 8 in. [200 mm], min, % |
17 |
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Elongation in 2 in. [50 mm], min, % |
21 |
Applications
Pressure Vessels & Boilers: Ideal for building vessels and boilers in the petroleum, chemical, and power sectors.
Low-Temperature Service: Its high nickel content (around 2.25% for Grade B) provides excellent impact resistance in cold environments, making it suitable for cryogenic applications like liquefied gas storage.
Oil & Gas: Used in equipment for oil and gas processing and transport.
Chemical Industry: Utilized for storage tanks and process equipment in chemical plants.
Air Separation & Cryogenic Processing: Widely used in air separation units (ASUs) and equipment for cryogenic separation.
Request a professional quotation for SA 203 Grade B from GNEE Steel.
1.What is SA 203 material?
SA203/SA203M steel is a very premium steel applied in the fabrication of low-temperature welding pressure vessel. We promote this kind of steel at its most competitive price. Our SA203E takes lead in its low-temperature ductility property in international quality level, with a max thickness of 100mm.
2.What is grade B steel?
Grade B steel, or 9260 steel, is a high-silicon alloy with approximately 0.60% carbon, making it a spring steel.
3.What does stainless steel B mean?
Condition B stainless steel is a variation of 304 and has also been annealed. Quite differently, though, type 304 condition B is much stronger and less ductile. This is accomplished through a cold working process.