Stainless Steel Grade 321 | UNS# S32100 is an austenitic chromium-nickel stainless steel that also contains titanium. The addition of titanium reduces and prevents carbide precipitation during welding processes. Type 321 demonstrates excellent oxidation and corrosion resistance and possess good creep strength. Often used for service in the 1000° to 1600°F temperature range, Stainless Steel Grade 321 can be found in applications that involve continuous and intermittent service temperatures within the carbide precipitation range of 800° to 1500°F.
Stainless Steel Grade 321 Specifications:
Stainless Steel Grade 321 product forms offered at all Titanium Industries’ locations:
Stainless Steel Grade 321 Applications:
- Commercial and Military Aircraft
- Automotive
- Oil & Gas
- Agricultural
- Forged Valve Bodies and Pumps
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Fe 69.53% | Cr 18.0% | Mn | C 0.080% | Si | |||||
| Ni 10.5% | S | Ti 0.40% | P | ||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft²-°F) | Specific heat capacity | Thermal expansion (1/°F) | Melting Point (°F) | |
| 0.289 | 2.4 | 112 | 0.12 | 0.00000928 | 2550 | |
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | 30 | 34.8 | |||||||
| Tensile Strength Range (Rm) (ksi) | 74.7 | 89.9 | |||||||
| Elongation (AL=5 x Ø) | 40.0% | 55.0% | |||||||
| Brinell Hardness (H) | 187 | 215 | |||||||
| Modulus of Elasticity (ksi) (E): 28000 | |||||||||
| Machineability General Index: 36% | |||||||||
All service center locations are AS9100 & ISO9001 accredited.
Birmingham, UK and Meerbusch, Germany service center locations are AS9100, AS9120 & ISO9001 accredited.
T.I. Approvals:
Plus a wide range of approvals from most leading OEM’s across Aerospace, Medical, Industrial, and Oil and Gas markets.