Ferrous Alloys
Type 321 Austenitic Stainless Steel
| Application & Characteristics | |
|---|---|
| Stabilized with titanium. Used in weldments for corrosive service in the 800 to 1650F range. | |
| Chemical Composition (%) | |
| Cr 18.0; Ni 10.0; Ti 0.40; Balance Fe. Allowable maximums: C 0.08; Mn 2.0; Si 1.50; P 0.045; S 0.030 | |
| Physical Properties | |
| Melting Range (°F) | 2550 2600 |
| Density (lbs/in³) 68F | 0.286 |
| Thermal Expansion (in/in °Fx10 to the power of -6) | 9.2 (0 600F) |
| Electrical Resistivity (ohms/cir mil/ft.) 68F | 433 |
| Mechanical Properties Temper = A | |
| Tensile Strength (psi x 10³) | 85 |
| Yield Strength (psi x 10³) | 40 |
| Elongation ( % ) | 50 |
| Hardness | B85(Rockwell) |
| Mechanical Properties Temper = H/2 | |
| Tensile Strength (psi x 10³) | 125 |
| Yield Strength (psi x 10³) | 95 |
| Elongation ( % ) | 25 |
| Hardness | C20(Rockwell) |
| Mechanical Properties Temper = H | |
| Tensile Strength (psi x 10³) | 165 |
| Yield Strength (psi x 10³) | 135 |
| Elongation ( % ) | 8 |
| Hardness | C30(Rockwell) |
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