Stainless steel 317L is a molybdenum containing, low carbon austenitic stainless steel. Due to its low carbon content, Stainless steel 317L also provides resistance to sensitization when welded and higher creep, stress to rupture, and tensile strength at elevated temperatures. It is non-magnetic in the annealed condition but may become slightly magnetic after welding.

Grade Specification Comparison of 317L stainless steel

022Cr19Ni13Mo3 S31703 317L SUS 317L STS 317L 317L S31703 X2CrNiMo 19-14-4
(00Cr19Ni13Mo3) X2CrNiMo18-15-4
X2CrNiMo 18-15-4 1.4438 Z2CND 19-15 X2CrNiMo 18-15-4 1.4438 03Х16Н15М3 2367 317S12
(X2CrNiMo 18-16) Z3CND 19-15-04 317S11

Type 317L Stainless Steel Properties

The 317L stainless steel provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.

The low carbon content of 317L stainless steel 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 317 stainless steel (UNS S31700).

317L stainless steel is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, however the material will harden due to cold working. 317L stainless steel can be easily welded and processed by standard shop fabrication practices.

Chemical Composition of 317L stainless steel

Element C Si Mn P S Cr Ni Mo
Min - - - - - 18 11 3
Max 0.03 1 2 0.045 0.03 20 15 4

Physical Properties of 317L stainless steel

Melting Point Density Specific Gravity Modulus of Elasticity
in Tension
  2540 – 2630°F  1390 – 1440°C   0.285 lbs / in3  7.89 g /cm3   7.98   29.0 x 106 psi  200 GPa

Mechanical Properties of 317L stainless steel

Alloy Temper Tensile Strength Yield Strength % Elongation Notes
Minimum Minimum 0.2% offset in 2" Minimum
(psi) (psi)
317 Annealed 75,000 30,000 40% -

Surface Finish Options of 317L stainless steel

Popular finish options include:

  • Also cold-rolled, the 2D finish has a matte surface with low reflectivity.
  • HR / No.1 . This hot-rolled finish has a scaled appearance and so is ideal where the final aesthetic is not an important concern.
  • BA / 2R. Cold rolled, annealed in a controlled atmosphere to retain a highly reflective finish.
  • Smooth finish, reflective grey sheen.

Applications of 317L stainless steel

317L stainless steel is commonly used to handle sulfur, pulp liquor, acid dyestuffs, acetylating and nitrating mixtures, bleaching solutions, severe coal and oil, and many chemical compounds. Some other applications that use 317L stainless steel include:

  • Paper and pulp handling equipment
  • Chemical and petrochemical processing equipment
  • Condensers in fossil and nuclear fueled power generation stations
  • Food processing equipment
  • Textile equipment



Stainless steel 317L can be readily welded by most standard processes. A post weld heat treatment is not necessary

  • Machinability

Low speeds and constant feeds will minimize this alloy’s tendency to work harden.

Tougher than 304 stainless with a long stringy chip, the use of chip breakers is recommended

What Stainless Steel Grades We Have!

Qinghe Steel is a full line supplier and processer of 317 stainless steel coil, sheet, plate, bar, and strip products. We stock many grades of stainless steel, including 300 and 400 series stainless, annealed and in various tempers and high temperature grades, for shipments worldwide. View our steel center here

Contact us today to discuss stainless steel for your project needs.


What Makes Grade 317 SS Different from 304 & 316 SS?

Grade 304, 316, and 317 stainless steel are all considered austenitic stainless steel alloys. These alloys all share some similar properties, such as high strength, corrosion resistance, and high concentrations of chromium and nickel.

What separates 316 and 317 SS from 304 SS is that these higher-numbered alloys have added molybdenum in their formulation—grade 316 has about 2-3% molybdenum, and grade 317 has more than 3% molybdenum.

This added molybdenum greatly improves the steel’s resistance to pitting from chlorides, which is why grade 316 SS is often used in the chemical processing and marine industries.

However, this added molybdenum content also influences the cost of these two alloys. Grade 317 SS is generally more expensive than grade 316 SS. 316 SS, in turn, is more expensive than grade 304 SS. The exact extra cost varies based on the market at the time.

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