Rupal Metals stands out as a reliable manufacturer and supplier of Stainless Steel 317L Flat Bars right in the heart of Delhi, India. These flat bars are not just any ordinary metal; they’re designed to resist corrosion and perform exceptionally well in tough chemical and marine environments. SS 317L is a low-carbon variant of 317 stainless steel, specifically crafted to avoid intergranular corrosion after welding, making it a dependable choice for acidic and chloride-heavy settings. With impressive strength, formability, and durability, Rupal Metals offers SS 317L flat bars in various sizes and finishes to cater to the unique demands of industries like chemical processing, pulp & paper, and marine engineering.
Stainless Steel 317L Flat Bars are made up of Chromium (18–20%), Nickel (11–15%), and Molybdenum (3–4%), with a maximum Carbon content of 0.03% to boost weldability and resistance to sensitization. This alloy boasts a tensile strength of around 515 MPa and a yield strength of 205 MPa. SS 317L is known for its excellent resistance to pitting, crevice corrosion, and chemical attacks in acidic or saline environments. The low carbon content helps prevent carbide precipitation during welding, making it perfect for use in as-welded conditions without needing post-weld heat treatment.
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 find their place in various industries that demand resistance to harsh chemical exposure, including sulfuric, acetic, and chlorinated compounds. You’ll often see them in heat exchangers, process piping, chemical tanks, pulp and paper manufacturing equipment, marine structures, and food processing components. Their flat profile makes them easy to fabricate and install in structural frameworks, reinforcement assemblies, and precision-built industrial systems. SS 317L is particularly valuable in welded structures that need to endure corrosive environments without post-weld annealing. Its blend of corrosion resistance, mechanical strength, and weldability makes it a top choice for high-performance applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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