Chung Metal provides top-grade Stainless Steel 317 Flat Bars, a high-moly austenitic stainless steel that is used for excellent corrosion resistance in hostile environments. SS 317 is particularly resistant to pitting, crevice corrosion, and chemical attack in chlorinated or acidic conditions. Flat bar form is best suited for chemical plant corrosive structural supports, plates, and welded structures. Chung Metal guarantees all SS 317 flat bars conform to exact thickness, width, and surface specifications suitable for heavy industrial applications in extreme process conditions, such as chemical, pulp and paper, and sea operations.
SS 317 has 18–20% chromium, 11–15% nickel, and 3–4% molybdenum. It provides tensile strength of 515–750 MPa, yield strength of 200–300 MPa, and elongation of 35–50%. The alloy provides better resistance against chlorides and sulfuric acid environments. It is non-magnetic and easy to weld. The flat bar profile accommodates structural and plate-like fabrication for chemical containment and support applications. Chung Metal supplies SS 317 flat bars in corrosion-resistant finishes and industrial-ready configurations.
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 317 | 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 317 | 1.4449 | S31700 | SUS 317 | – |
Stainless Steel 317 is primarily composed of iron, chromium (about 18-20%), nickel (11-15%), and molybdenum (3-4%). It also contains small amounts of manganese, silicon, and carbon, offering excellent resistance to corrosion, especially in acidic environments.
Yes, Stainless Steel 317 Flat Bar is highly resistant to corrosion due to its high chromium and molybdenum content. It performs exceptionally well in aggressive environments, including exposure to chlorides and acidic conditions, making it suitable for harsh applications.
Yes, Stainless Steel 317 Flat Bar can be welded easily. Its composition, including high nickel and chromium, allows for good weldability. However, proper welding techniques and preheating may be necessary to prevent cracking or distortion in some cases.
317 flat bars find applications in marine hardware, pulp and paper equipment, condensers, evaporators, and pollution control systems. These have high molybdenum content that provides superior resistance against chloride attack, acid chemicals, and wet corrosive conditions. Flat shape is favorable for applications in machinery bases, welded vessels, brackets, and structural frames. SS 317 suits applications in fertilizer production, bleaching systems, and coastal structures. Chung Metal supplies these bars in specially customized dimensions for high-performance and extended life application in harsh corrosion-susceptible environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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