317L – 1.4438

317L – 1.4438

(South America offer) A 3% molybdenum-containing Austenitic Stainless Steel with good excellent resistance.

Main features

Stainless steel AISI 317L has as its main characteristic the great addition of molybdenum to its chemical composition, which guarantees an increased resistance to chemical attack when compared with chromium-nicke-molybdenum austenitic steels of the type AISI 316L. This grade has approximately 1% more chromium, nickel and molybdenum when compared with austenitic steel AISI 316L


Chemical and petrochemical industries, and paper and cellulose producing industries; as condensers in fossil and nuclear based energy generating stations.


  • ASTM 317L
  • UNS S31703
  • EN 1.4438

Chemical composition

Typical values

  • C=0.023
  • Si=0.45
  • Mn=2
  • Cr=18.04
  • Ni=11.59
  • P=0.034
  • S=0.001
  • Mo=3.02
  • N=0.06

Dimensional range

Coils & Sheets

  • Thickness: from 1 to 8 mm
  • Width: from 1,000 mm to 1,300 mm


  • Diameter: from 8 to 2,032 mm
  • Thickness: from 0.50 to 6.35 mm

Heavy Plates

  • Thickness: from 9 to 50 mm
  • Width: from 1,000 mm to 1,300 mm

Surface aspect

  • Hot rolled & Cold rolled
  • NR1/1D, 2D, 2B

According to forms & dimensions.

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