317/317L Stainless Steel
UNS S31700/S31703

Type 317/317L Stainless Steel is a more corrosive resistant grade of stainless than Type 316/316L due to its higher chromium, nickel and molybdenum contents. The addition of these give 317/317L higher corrosion resistance, tensile strength, and creep rupture strength at elevated temperatures. Type 317/317L is used in the chemical, petrochemical, and paper industries.

It is the policy of CMC Letco Ind to stock and use only dual rated type 317/317L Stainless Steels. This provides our  customers with the advantage of better corrosion resistance found in Type 317L, along with the greater mechanical properties in Type 317.

ASME Boiler and Pressure Vessel Specifications
Sheet/ Plate Forgings Weld Fittings Rod and Bar Tubing - Welded/ Smls Pipe - Welded/ Smls Bolting- Bolts/ Nuts Filler Metals
SA240 SA182 SA403 SA479 SA249/ SA213 SA312/ SA312 SA193-B8/ SA194-Gr8 ER317L

ASME Boiler and Pressure Vessel Chemical Requirements for Sheet/Plate
Note: all percentages max unless otherwise specified
C Mn P S Si Ni Cr Mo Ni
0.030 2.00 0.045 0.03 0.75 11.00-15.00 18.00-20.00 3.00-4.00 0.10

ASME Boiler and Pressure Vessel Mechanical Properties for Sheet/Plate
Tensile Strength, Min ksi Yield Strength, (0.2% offset), Min, ksi Min. Elongation in 2", % Density lb/in³
75 30 40.0 0.289

CMC Letco Ind shall not be held liable for any type of damages resulting from the use of this information. The end user assumes all risk and liability in connection with the use of this information.