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Stainless Steel 317
Stainless Steel 317
317L is a molybdenum bearing, low carbon content "L" grade austenitic stainless steel that provides improved corrosion resistance over 304L and 316L stainless steels. The low carbon provides resistance to sensitization during welding and other thermal processes. 317L is non-magnetic in the annealed condition but may become slightly magnetic as a result of welding.
Chemistry Composition,%
| Ni | Cr | Mo | Mn | Si |
|---|---|---|---|---|
| 11.0 - 15.0 | 18.0 - 20.0 | 3.0 - 4.0 | 2.0 Max | .75 Max |
| C | N | S | P | Fe |
| 0.03 Max | 0.1 Max | 0.03 Max | 0.045 Max | Balance |
What are the characteristics of 317L Stainless?
- Improved general and localized corrosion to 316L stainless
- Good formability
- Good weldability
In what applications is 317L Stainless used?
- Flue-gas desulfurization systems
- Chemical process vessels
- Petrochemical
- Pulp and Paper
- Condensers in power generation
Mechanical Properties
Minimum Specified Properties, ASTM A240
| Ultimate Tensile Strength, ksi Minimum | .2% Yield Strength, ksi Minimum | Elongation Percent | Hardness Max. |
|---|---|---|---|
| 75 | 30 | 35 | 217 Brinell |
Welding 317L
317L is readily welded by a full range of conventional welding procedures (except oxyacetylene). AWS E317L/ER317L filler metal or austenitic, low carbon filler metals with molybdenum content higher than that of 317L, or a nickel-base filler metal with sufficient chromium and molybdenum content to exceed the corrosion resistance of 317L should be used to weld 317L steel.
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