Alloy 317L / 317 Stainless Steel

Alloy 317L / 317 Stainless Steel

Alloy 317L / 317 Stainless Steel Chemical Analysis Weight % (all values are maximum unless a range is otherwise indicated) Alloy 317L (UNS S31703) is a lowcarbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has...
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Product Details

Alloy 317L / 317 Stainless Steel

Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)





Chromium18.0 min.-20.0 max.Phosphorus0.045
Nickel11.0 min.-15.0 max.Sulfur0.030
Molybdenum3.0 min. - 4.0 max.Silicon0.75
Carbon0.030Nitrogen0.10
Manganese2.00IronBalance


Alloy 317L (UNS S31703) is a lowcarbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades. The alloy provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.


The low carbon content of Alloy 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317 (UNS S31700).


Alloy 317L 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.


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