AISI 317 L is an austenitic chromium-nickel molybdenum stainless steel that offers high corrosion resistance, heat resistance, and weldability. Due to its molybdenum content, it has increased resistance to acids, as well as pitting and intergranular corrosion. Its versatility makes this steel in demand in various industries, including chemical, food, textile, oil and gas, and nuclear.
AISI 317 L is one of the most corrosion-resistant stainless steels. It reliably withstands aggressive environments such as sulfuric, nitric, acetic, formic acids, and chloride solutions. This makes AISI 317 L suitable for chemical industry applications such as tanks, pipelines, pumps, and in the nuclear industry for manufacturing reactor equipment.
AISI 317 L also has high heat resistance and can be used at temperatures up to 1150°C. This property makes it indispensable in power engineering, mechanical engineering, and metallurgy.
The weldability of AISI 317 L makes it convenient for fabricating complex structures.
Chemical composition:
| Element | Content, % |
|---|---|
| Chromium | 18-20 |
| Nickel | 12-15 |
| Molybdenum | 3-4 |
| Manganese | 1-2 |
| Silicon | 0.5-1.0 |
| Carbon | 0.03 max |
| Nitrogen | 0.04-0.10 |
| Titanium | 0.04-0.10 |
| Iron | remainder |
Mechanical properties:
| Property | Value |
|---|---|
| Tensile strength | 600 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 317 L |
| European Union | EN 1.4438 |
| Ukraine | 08Х17Н13М3 |
Applications:
- Chemical industry: tanks, pipelines, pumps, equipment.
- Food industry: equipment for processing and storing food.
- Textile industry: equipment for dyeing and textile processing.
- Oil and gas industry: equipment for oil and gas production, transportation, and processing.
- Nuclear industry: reactor equipment.
- Power engineering: furnaces, boilers, heat exchangers.
- Mechanical engineering: engine parts, exhaust systems.
- Metallurgy: rolling mill rolls, furnaces, recuperators.