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Medical317/317L is a low carbon austenitic chromium-nickel stainless steel that can be used in applications where it is not possible to anneal after welding and where maximum corrosion resistance is required. It provides good oxidation resistance in intermittent service to 1600 F and in continuous service to 1700 F. The higher molybdenum content of Alloy 317L assures superior general and localized corrosion resistance in most media when compared with 304/304L and 316/316L stainless steels. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317/317L. The material is non-magnetic in the annealed condition. It cannot be hardened by heat treatment; however the material will harden due to cold working. Alloy 317L can be easily welded and processed by standard shop fabrication practices. The material is often used in Chemical Processing, Food Processing, Oil Refineries, Paper Mills, Gas Scrubbers, Photographic Handling, and Marine Parts. (UNS S31700 & UNS 31703)
Chemical Makeup
| Element | Min | Max |
|---|---|---|
| Carbon, C | – | 0.3 |
| Manganese, Mn | - | 2 |
| Silicon, Si | - | 0.75 |
| Sulfur, S | - | 0.03 |
| Phosphorus, P | – | 0.045 |
| Chromium, Cr | 18 | 20 |
| Nickel, Ni | 11 | 15 |
| Copper, Cu | - | 0.75 |
| Molybdenum, Mo | 3 | 4 |
| Nitrogen, N | - | 0.1 |
Common Applications
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Industrial
Benefits
- Corrosion Resistance
- Oxidation Resistance
- High Strength
- Low Weight
- Ease Of Fabrication