| Customization: | Available |
|---|---|
| Type: | Steel Plate |
| Standard: | ASTM, AISI, GB, JIS, DIN, BS |
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Stainless steel 321H is a general purpose austenitic stainless steel that is stabilized against carbide precipitation and designed to work within the carbide precipitation temperature range 427 to 816°C (800 to 1500°F). It is non-magnetic in the annealed condition and can be hardened only by cold working. Titanium is added to the alloy's composition to suppress grain boundary chromium carbide precipitation and reduce susceptibility to intergranular corrosion.
The chemical composition of Grade 321H stainless steel is outlined in the following table.
| Element | Content (%) |
| Iron, Fe | Balance |
| Chromium, Cr | 17-19 |
| Nickel, Ni | 9-12 |
| Manganese, Mn | 2 |
| Silicon, Si | 1 |
| Titanium, Ti | 0.35 |
| Phosphorous, P | 0.045 |
| Carbon, C | 0.04-0.10 |
| Sulfur, S | 0.03 |
The mechanical properties of Grade 321H stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
| Tensile strength | 480 MPa | 69600 psi |
| Yield strength | 205 MPa | 29700 ksi |
| Elongation at break | 29% | 29% |
| Hardness, Brinell | ≤187 | ≤187 |
This stainless steel has a density of 0.289 Ibm/in^3 and the elastic modulus is 193 Gpa. The mean coefficient of thermal expansion between 32ºF and 212ºF is 9.22in x10-6, between 32 and 599 the coefficient of thermal expansion is 9.56in X10^-6. The coefficient of thermal expansion of 321 plate between 32ºF and 1,000ºF is 1.03in x10^-5. The specific heat of 321 stainless steel plate is 0.194 BTU/IBM.
| Grade | UNS | DIN | EN | AMS | ASTM | JIS | |
| 321H |
UNS S32109 |
- |
1.4878 |
ASTM A240 ASTM A480 |
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