Alloy Wire International
Datasheet: Stainless Steel 321
Stainless Steel 321
Stainless Steel 321 has similar composition to 304 Stainless Steels but with addition of Titanium.
Stainless Steel 321 is also known as AISI 321, Nirosta 4541, Polarit 731, and Remanit 4541.
Available in all profile options
Key Features
Corrosion resistant
Typical Applications
Aircraft locking wire
General locking wire
Designations
W.Nr. 1.4541
UNS S32100
AWS 133
Specifications
ASTM A313
ASTM A240
ASTM A479
BS EN 10088-3:2014
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| C | – | 0.08 |
| Mn | – | 2.00 |
| P | – | 0.04 |
| S | – | 0.03 |
| Si | 0.40 | 1.00 |
| Cr | 17.00 | 19.00 |
| Ni | 9.50 | 12.00 |
| N | – | 0.10 |
| Mo | – | 0.50 |
| Ti | 5 x C | 0.70 |
| Fe | BAL |
Alloy Details
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.03 g/cm³ | 1370 °C | 16.6 μm/m °C (20 – 100 °C) | 78 kN/mm² | 187.5 kN/mm² |
| 0.29 lb/in³ | 2500 °F | 9.2 x 10-6 in/in °F (70 – 212 °F) | 11300 ksi | 28000 ksi |
Alloy specification
| Condition as supplied by Alloy Wire | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 450 °C (840 °F) | 1 Hr | Air |
Properties
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <800 N/mm² | <116 ksi |
| Approx. operating temperature | -200 to +300 °C | -330 to +570 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 1300 – 2200 N/mm² | 189 – 319 ksi |
| Approx. operating temperature | -200 to +300 °C | -330 to +570 °F |
The above tensile strength ranges are typical. If you require different please ask.
