Semih Metals is a trusted manufacturer and supplier based in Istanbul, Turkey. The company focuses on providing high-quality stainless steel products, including the premium Stainless Steel 317 Flat Bar. With years of experience and a strong reputation for reliability, Semih Metals is dedicated to meeting the diverse needs of industries around the world. The company uses modern technology, skilled craftsmanship, and strict quality standards to create durable and precisely engineered stainless steel solutions. As a reliable supplier, Semih Metals promises timely delivery, competitive pricing, and customized options, making it a preferred partner for businesses that seek top-quality stainless steel materials.
The Stainless Steel 317 Flat Bar is an austenitic chromium-nickel-molybdenum steel that offers superior corrosion resistance. Its typical chemical composition includes 18 to 20% chromium, 11 to 15% nickel, and 3 to 4% molybdenum, along with controlled amounts of carbon, manganese, silicon, and iron balance. This alloy shows excellent tensile strength, yield strength, and elongation properties, providing both toughness and ductility. It remains stable at high temperatures and has better resistance to pitting and crevice corrosion compared to standard grades. These mechanical and chemical properties make it suitable for tough and corrosive environments.
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.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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