321 stainless steel coil and sheet is part of the austenitic family of stainless steel. 321 is basically a 304 grade containing a stabilizer of titanium. Type 321 is a good choice for applications where heat is an issue. 321 can be used in applications up to 900 degrees Celsius where 304 is normally used up to 500 degrees Celsius. Grade 321 has excellent forming and welding characteristics. It does not polish well so would not be used for decorative applications.
GNEE stocks a wide range of sizes in 321 stainless certified to AMS 5510, ASTM A 240, and SA 666.
| Product Type | 321 Stainless Steel Sheet, 321 Stainless Steel Plate |
|---|---|
| Specification | ASTM A240 321 / ASME SA 240 321 |
| Tolerances (width / thickness) |
|
| International Standard |
|
| ASTM A240 321 material Dimensions |
|
| Thickness | 0.1 to 100 mm Thk |
| Width | 10-2500mm |
| Length | 2m, 2.44m, 3m, or as required |
| Finish | SATIN, 2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), No.1 finish hot rolled, 1D, No.4, BA, 8K, hairline, brush, mirror etc. |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard |
| Forms / Shapes | Plate, Sheet, Coils, Foils, Strip, Flats, Clad Plate, Plain Sheet, Rolling Sheet, Rolling Plate, Flat Shim, Flat Sheet, Shim Sheet, Rolls, Blank (Circle), sheared, annealed, soft annealed, descaled, tread plate, Checker Plate |
| Other Trade Name of 321 Stainless Sheet | SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE 321 Sheet |
Physical Properties
Typical physical properties for annealed grade 321 stainless sheets of steel are given in table .
Physical properties of 321-grade stainless steel in the annealed condition
| 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 |
Standard Inventory Specifications
UNS S32100
UNS S32109
AMS 5510
AMS 5645
ASTM A 167
ASTM A 240
ASTM A 276
ASTM A 479
ASME SA 167
ASME SA 240
Other industry standards we comply with:
PWA-LCS
GE Aircraft Engine (GT193)
RR SABRe Edition 2
DFARS Compliant
Common Trade Names
ATI 321 (™ Allegheny Technologies)
Common Applications of 321
Useful in the chromium carbide precipitation range (800-1500°F, 427-815°C)
Aircraft exhaust stacks
Manifolds
Chemical processing equipment
Welded equipment
Jet engine parts
Heat Exchangers
Expansion joints
Please contact us for more details.
The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.
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