Alloy Wire International
Datasheet: Stainless Steel 304
Stainless Steel 304
Stainless Steel 304 is the most widely used stainless steel, and like 302, it has good mechanical properties and corrosion resistance. This alloy can withstand attack in a range of corrosive media, and its durability makes it easy to sanitise, meaning it is ideal for kitchen and food applications.
Stainless Steel 304 is also known as AISI 304.
Available in all profile options
Key Features
Stainless Steel 304 offers the following key features:
Good mechanical properties and corrosion resistance.
Typical Applications
Stainless Steel 304 is known to be suitable for the following applications:
Springs
Engineered components
Wire mesh
Wire cloth
Hose braiding
Designations
W.NR 1.4301
W.NR 1.4307
UNS S30400
AWS 161
Specifications
ASTM A313
ASTM A580
BS 970
BS 2056
Chemical Composition
The chemical composition of Stainless Steel 304 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| C | – | 0.07 |
| Mn | – | 2.00 |
| P | – | 0.045 |
| S | – | 0.030 |
| Si | – | 1.00 |
| Cr | 17.50 | 19.50 |
| Ni | 8.00 | 10.50 |
| Fe | BAL |
Alloy Details
Stainless Steel 304 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.0 g/cm³ | 1454 °C | 18.2 μm/m °C (20 – 100 °C) | 70.3 kN/mm² | 187.5 kN/mm² |
| 0.289 lb/in³ | 2650 °F | 10.1 x 10-6 in/in °F (70 – 212 °F) | 10196 ksi | 27195 ksi |
Heat treatment of finished parts
The typical heat treatment of Stainless Steel 304:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 250 °C (480 °F) | 1 Hr | Air |
Properties
The typical mechanical properties of Stainless Steel 304:
| 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.
