ASME SA240 SS321 Head
The ASTM A240 specification covers chromium, chromium-manganese, and chromium-nickel-molybdenum stainless steel plate, which can be used for various applications including pressure vessels and heat exchangers.
Specifically, SS321 is a type of austenitic stainless steel that offers good resistance to intergranular corrosion and high-temperature oxidation. It's commonly used in applications where the material will experience temperatures up to 925°C (1687°F).
An "ellipsoidal head" refers to the shape of the component. In the context of pressure vessels or tanks, these heads are often used due to their ability to provide a smooth transition from the cylindrical part of the vessel to the head, minimizing stress concentrations.
The dimensions and specific requirements for an ASTM A240 SS321 ellipsoidal head would depend on the size and application of the vessel it's intended for. These could include things like the overall diameter, thickness, curvature, and specific dimensions related to the ellipse's axes.
For more detailed information or specific requirements, you would need to consult the ASTM A240 standard itself or work with a materials engineer or fabricator who specializes in pressure vessel components.
Stainless Steel 321 Chemical Compositions
| Grade | | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other |
| 321 | min.
max | –
0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0
19.0 | – | 9.0
12.0 | 0.10 | Ti×5(C+N)
0.70 |
Stainless Steel 321 Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness |
| Rockwell B (HR B) max | Brinell (HB) max |
| 321 | 515 | 205 | 40 | 95 | 217 |
Stainless Steel 321 Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100 °C (J/kg.K) | Electrical Resistivity (nΩ.m) |
| 0-100 °C | 0-315 °C | 0-538 °C | at 100 °C | at 500 °C |
| 321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
ASME SA240 SS321Head For Heat Exchanger
1. Pressure Vessels
2. Storage Tanks
3. Heat Exchangers
4. Reactor Vessels
5. Food Processing Equipment
6. Piping Systems
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ASTM SA240 SS321 Ellipsoidal Head And Dish End For Pressure Vessel Images
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