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317L is a molybdenum-bearing steel that offers a higher stress-to-rupture, creep, and tensile strength at elevated temperatures. 317L is a low carbon version of 317 and is non-magnetic in the annealed condition. 317L can often be found in pulp and paper plants, food processing plants, chemical and petrochemical processing equipment, and textile equipment.

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317L Specifications

UNS 31703

Welded Pipe 6″-14″ 10s, 40s ASTM/ASME 312
Smls Pipe ½”-8″ 10s, 40s, 80s ASTM/ASME 312
B/W Fittings ½”-12″ 10s, 40s, 80s ASTM/ASME 403
Flanges ½”-12″ 150#, 300# ASTM/ASME 182


Limiting Chemical Composition, %


Ni…11.0-15.0 Si…1.0 max.
Cr…18.0-20.0 S…..0.03 max.
C…..0.035 max. P…..0.040 max.
Mn…2.0 max.