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321
Stainless 321 Product Guide
Applications | Specifications | Mechanical and Chemical Data | Tolerances
Overview
Reinforced with titanium, 321 stainless steel excels in high temperature environments, providing resistance to cracking and corrosion. Additionally, 321 stainless resists scaling at higher temperatures. The addition of titanium means that welding is not suggested for this alloy. Typically used in aircraft engines, expansion joints, thermal equipment, refinery equipment, and high temperature chemical processing equipment.
Common Trade Names
UNS S32100, AISI 321, Alloy 321, T 321, T-321, austenitic stainless steel
Other Resources
Safety Data Sheet | Weight Calculator | Mill Test Reports
Products
Purchase Hex Bar 321 | Round Bar 321 | Sheet/Plate 321 | Foil 321 | Foil Ticronic 321
Applications
- Aircraft Engines
- Expansion Joints
- Thermal Equipment
- High Temperature Chemical Processing
Stainless 321 Specifications
ASTM | AMS |
|---|---|
| A167 | 5510 |
| 5645 |
| Physical Properties 321 | |||||
| Density | 0.287 lb/in3 | ||||
| Ultimate Tensile Strength | 92.5 ksi | ||||
| Yield Tensile Strength | 41.5 ksi | ||||
| Shear Modulus | 11,000 ksi | ||||
| Shear Strength | 64 ksi | ||||
| Fatigue Strength | 36 ksi | ||||
| Hardness Rockwell | Brinell | B92 | 190 | ||||
| Elongation at Break Percentage | 42% | ||||
| Reduction of Area | 65% | ||||
| Modulus of Elasticity | 29,000 ksi | ||||
| Poisson's Ratio | 0.28 | ||||
| Machinability Percentage | 36% | ||||
| Melting Point | 2,550-2,600 °F | ||||
| Specific Heat | 1.1 x 10^-1 BTU/lb-°F | ||||
| Thermal Conductivity | 108 BTU-in/hr-ft^2-°F | ||||
| Electrical Conductivity | 2.4% IACS | ||||
|
Chemistry Information
|
|
Element |
Percentage |
| C | 0.08 |
| Cr | 18 |
| Fe | 68 |
| Mn | 2 |
| P | 0.045 |
| S | 0.03 |
| Ni | 11 |
| Si | 1 |
| Ti | 0.15 |
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