Semih Metals is the leading supplier and manufacturer of Stainless Steel 347 Bars and Rods, offering top-quality products that meet the highest industry standards. We specialize in providing these bars and rods with excellent resistance to oxidation and corrosion, especially in high-temperature environments. Our Stainless Steel 347 Bars and Rods are designed for a wide range of applications, including chemical processing, power plants, and aerospace industries. With a commitment to quality, we ensure that our products deliver exceptional durability and performance, meeting the specific needs of our clients for even the most demanding applications.
Stainless Steel 347 Bars and Rods are composed primarily of iron, with key elements including 17-19% chromium and 9-13% nickel, providing excellent corrosion resistance and strength. The alloy also contains 10-15 times the carbon content of niobium, which stabilizes the structure and prevents carbide precipitation at grain boundaries, making it ideal for welded applications. Additionally, it includes small amounts of manganese (2%), silicon (1%), sulfur, and phosphorus. The mechanical properties of Stainless Steel 347 Bars and Rods include a tensile strength of 515 MPa (75 ksi) and a yield strength of 205 MPa (30 ksi), ensuring durability and performance in high-temperature environments.
Standard Specification : ASTM A276, ASTM A479, ASTM A182
Specification : EN, DIN, JIS, ASTM, BS, ASME, AISI
SS 347 Bright Bars : Outside Diameter in the range of 4mm to 200mm
SS 347 Round Bars : Outside Diameter in the range of 4mm to 500mm
SS 347 Flat Bars : 1 / 2” to 10” in thickness range of 1.6mm to 150mm, Custom Size Stainless Steel Flats available
SS 347 Square Bars : 3mm – 100mm
SS 347 Hex Bars : 4mm – 101.6mm
Length : 1 to 6 Meters, Custom Cut Lengths
Finish : Matt Finish, Bright Polished, Black, NO.4 Finish, Rough Turned, BA Finish
Our SS 347 Round bars conforms to NACE MR0175/ISO 15156
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | Mn | C | P | Si | Cr | S | Ni | Co + Ta | Fe |
| SS 347 | 2 maximum | 0.08 maximum | 0.045 maximum | 0.75 maximum | 17 – 20 | 0.03 maximum | 9 – 13 | 10xC min 1.00 maximum | 62.74 |
| Elongation | Density | Tensile Strength | Melting Point | Yield Strength (0.2%Offset) |
| 40 % | 8 g/cm3 | MPa – 515, Psi – 75000 | 1454 °C (2650 °F) | MPa – 205, Psi – 30000 |
| STANDARD | UNS | AFNOR | WERKSTOFF NR. | BS | JIS | GOST | EN |
| SS 347 | S34700 | – | 1.4550 | – | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Stainless Steel 347 Bars and Rods offer exceptional resistance to corrosion, especially in high-temperature environments. They provide excellent oxidation resistance and are highly resistant to intergranular corrosion, making them ideal for industries like aerospace, chemical processing, and power generation.
These bars and rods are perfect for use in high-temperature applications, including heat exchangers, furnace parts, chemical reactors, and equipment in industries such as aerospace, chemical processing, and power generation, where resistance to oxidation and scaling is crucial.
Yes, Stainless Steel 347 Bars and Rods are specifically designed to perform in elevated temperature conditions. Their resistance to oxidation and scaling ensures durability and strength in harsh environments, making them ideal for applications that involve high heat.
We offer Stainless Steel 347 Bars and Rods, ideal for high-temperature applications due to their excellent corrosion resistance and resistance to intergranular corrosion. These bars and rods are commonly used in industries such as aerospace, chemical processing, and power generation. They are particularly suited for equipment like heat exchangers, furnace parts, and chemical reactors, where resistance to oxidation and scaling is essential. Their ability to maintain strength at elevated temperatures makes them a preferred choice for applications in harsh environments. We ensure that our Stainless Steel 347 products meet the highest standards for superior performance and durability.






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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