Overview
317L is a molybdenum bearing, low carbon content"L"grade austenitic stainless steel that provides improved corrosion resistance over 304L and 316L. The low carbon provides resistance to sensitization during welding and other thermal processes, it's non-magnetic in the annealed condition but may become slightly magnetic as a result of welding.
317L has excellent corrosion resistance in a wide range of chemicals, especially in acidic chloride environments such as those encountered in pulp and paper mills. Increased levels of chromium, nickel and molybdenum compared to Grade 316L, which improve the resistance to chloride pitting and general corrosion. 317L is resistant to sulfuric acid concentrations up to 5 percent at temperatures as high as 120°F (49°C). Under 100°F (38°C), this alloy has excellent resistance to solutions of higher concentration. However, service tests are recommended to account for the affects of specific operating conditions that may affect corrosion behavior. In processes where condensation of sulfur-bearing gases occurs, 317L is much more resistant to attack at the point of condensation than conventional alloy 316. The acid concentration has a marked influence on the rate of attack in such environments and should be carefully determined by service tests.
Specification
ASTM A213/A213M-21a Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
317L Stainless Steel Pipe & Tubes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
317L Stainless Steel Pipe & Tubes Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
317L Stainless Steel Pipe & Tubes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
317L Stainless Steel Pipe & Tubes Outer Diameter Size | Seamless - 1/2"NB TO 18"NB |
317L Stainless Steel Pipe & Tubes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
317L Stainless Steel Pipe & Tubes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
317L Stainless Steel Pipe & Tubes Ends | Plain Ends / Beveled Ends |
317L Stainless Steel Pipe & Tubes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
317L Stainless Steel Pipe & Tubes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
317L Stainless Steel Pipe & Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
Chemical Composition
Element | Content (%) |
Iron, Fe | Balance |
Chromium, Cr | 18-20 |
Nickel, Ni | 11-15 |
Molybdenum, Mo | 3-4 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Phosphorous, P | 0.045 |
Carbon, C | 0.03 |
Sulfur, S | 0.03 |
Mechanical Properties
Properties | Metric | Imperial |
Tensile strength | 595 MPa | 86300 psi |
Yield strength | 260 MPa | 37700 psi |
Modulus of elasticity | 200 GPa | 29000 ksi |
Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 55% | 55% |
Hardness, Rockwell B | 85 | 85 |
Applications
1. Condensers in fossil.
2. Pulp and paper manufacturing.
3. Nuclear fueled power generation stations.
4. Chemical and petrochemical process equipment.
