Vipul Sheets and Plates is a prominent manufacturer and supplier of Stainless Steel 317L Flat Bars in Delhi, India. SS 317L is a low-carbon, high-performance alloy that provides excellent resistance to chemical corrosion, particularly in environments with sulfuric, acetic, and formic acids. Our 317L flat bars are recognized for their great surface finish, dimensional accuracy, and machinability. These flat bars suit structural applications and fabrication work in chemical plants, marine industries, and pollution control systems. Vipul guarantees reliable supply, tailored sizes, and strict quality testing to meet the demanding needs of our industrial customers.
Stainless Steel 317L contains 18–20% Chromium, 11–15% Nickel, 3–4% Molybdenum, and ≤0.03% Carbon. It offers a tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of ≥35%. The alloy is very resistant to pitting, crevice corrosion, and chemical attack. Its low carbon content prevents carbide precipitation during welding. SS 317L flat bars keep their toughness and strength at high temperatures and are easy to fabricate and weld. These traits make them well-suited for demanding industrial and chemical processing tasks.
Standard ASTM A276, A479 / ASME SA276, SA479
Range 3.17 MM TO 350 MM DIA
Diameter 25mm to 152mm
Size Tolerance h8, h9(DIN 671), h10, h11, ASTM A484, DIN 1013
Finish Bright, Polish & Black
Form Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging Etc.,
Condition Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished
Other Services Machining (CNC), Centreless Grinding (CG), Heat Treatment, Anneling, Pickling, Polish, Rolling, Forging, Cutting, Bending, Minor Fabrication
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 317L | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 – 20.00 | 3.00 – 4.00 | 11.00 – 15.00 | 57.845 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|
| 7.9 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
|---|---|---|---|---|
| SS 317L | 1.4449 | S31700 | SUS 317 | – |
Stainless Steel 317L is primarily composed of iron, with high levels of chromium (18-20%) and nickel (11-15%), along with molybdenum (3-4%) for enhanced corrosion resistance. It also contains small amounts of carbon, manganese, silicon, and phosphorus.
Yes, Stainless Steel 317L Flat Bar is highly resistant to corrosion, especially in harsh environments. Its high chromium, nickel, and molybdenum content enhances resistance to pitting, crevice corrosion, and general oxidation, making it ideal for chemical and marine applications.
Yes, Stainless Steel 317L Flat Bar can be welded easily using standard welding techniques such as TIG, MIG, and SMAW. Its low carbon content minimizes carbide precipitation during welding, ensuring strong joints and excellent corrosion resistance in the weld area.
Stainless Steel 317L Flat Bars are used in petrochemical equipment, chemical process tanks, evaporators, pollution control systems, and marine structures. Their resistance to aggressive chemicals makes them suitable for acid processing equipment and piping systems. Flat bars also serve in structural applications like support frames, base plates, brackets, and architectural trim. They are easy to machine and form, making them great for fabrication and welding. In industries like pharmaceuticals, paper, and food processing, 317L flat bars are preferred for their clean surface, resistance to corrosion, and mechanical strength in both hot and cold conditions.






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