AISI 314 stainless steel is an austenitic chromium-nickel steel that has high heat resistance compared to its counterparts. Due to its silicon content, it has resistance to oxidation and carburization. Its versatility makes this steel in demand in various industries.
Chemical composition:
| Element | Content, % |
|---|---|
| Chromium | 24-26 |
| Nickel | 19-21 |
| Manganese | 1-2 |
| Silicon | 1.5-2.5 |
| Molybdenum | 0.2-0.6 |
| Nitrogen | 0.04-0.10 |
| Carbon | 0.08 max |
| Iron | remainder |
Mechanical properties:
| Property | Value |
|---|---|
| Tensile strength | 620 MPa |
| Brinell hardness | 200 HB |
| Elongation at break | 50% |
| Impact toughness | 80 J/cm² |
Physical properties:
| Property | Value |
|---|---|
| Density | 7.9 g/cm³ |
| Melting point | 1425°C |
| Thermal conductivity | 16.3 W/(m·K) |
| Electrical resistivity | 1.05 μΩm |
Analogs:
| Country | Analog |
|---|---|
| USA | AISI 314 |
| European Union | EN 1.4841 |
| Ukraine | 08Х25Н20С2 |
Applications:
- Power engineering: furnaces, boilers, heat exchangers, gas turbines.
- Chemical industry: evaporators, reactors, pipelines.
- Oil and gas industry: drilling rigs, pumps, storage tanks.
- Mechanical engineering: engine parts, exhaust systems, bearings.
- Metallurgy: rolling mill rolls, furnaces, recuperators.
- Food industry: equipment for processing and storing food products.
- Construction: architectural elements, cladding, chimneys.
Advantages:
- High corrosion resistance
- High temperature resistance
- Strength and ductility
- Weldability
- Non-magnetic properties
Disadvantages:
- Relatively high cost
- Difficult to machine