317L Stainless Steel Applications, Chemical Composition

317L Stainless Steel is a molybdenum bearing austenitic chromium nickel steel similar to type 316 Stainless Steel, except the alloy content in 317L Stainless Steel is somewhat higher. It has a supperior corrosion resistance in special applications where it is desired to reduce contamination to a minimum. 317L Stainless Steel was developed primarily to resist more effectively the attack of sulfurous acid compounds. Howerver, its proven ability to combat corrosion has widened its use considerably and is now being used for many other industrial applications. The low carbon content of 317L Stainless Steel provides immunity to intergranular corrosion in applications where heavy cross sections cannot be annealed after welding or where low temperature stress relieving treatments are desired.

Availability – Stainless Steel 317L 

Seamless Stainless Steel Pipes 1/2″ – 8″

Stainless Steel Tubes 1/2″ – 8″

Weld Stainless Steel Pipes 1/2″ – 12″

Stainless Steel Pipe Fittings 1/2″ – 12″

Stainless Steel Flanges 1/2″ – 12″

Specifications – Stainless Steel 317LASTM

A312, A403, A182ASME

SA312, SA403, SA182

Chemical Composition – Stainless Steel 317LCCrMnMoNiPSSiMax MaxMax  MaxMaxMax0.08%24% – 26%2.0%0.75%19% – 22%0.045%0.03%0.75%

Design Features – Stainless Steel 317L

1. A molybdenum bearing austenitic chromium nickel steel with an alloy content somewhat higher than the 316 grades.

2. Superior corrosion resistance in difficult environments.

3. Higher creep, stress-to-rupture and tensile strengths than other stainless steels.

4. Reduced intergranular precipitation of chromium carbides during welding and stress relieving as well as minimized possibility of corrosion failure from intergranular attack due to low carbon content.

5. Resistance to pitting and crevice corrosion making 317L a successful life-cost product in a variety of highly corrosive environments.

Typical Applications – Stainless Steel 317L

1. Flue gas desulfurization scrubber systems

2. Chemical and petro-chemical processing equipment

3. Pulp and paper plants

4. Food processing equipment

5. Textile equipment

6. Stainless Steel Flanges

7. Stainless Steel Pipe Fittings

8. Condensers in power generation

9. Stainless Steel Pipes

10. Stainless Steel Tubes

Tensile Requirements – Stainless Steel 317L

Tensile Strength (KSI): 75

Yield Strength (KSI): 30

Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)