Sadiki Metals, a well-respected manufacturer and supplier located in Kinshasa, Congo, specializes in providing high-performance Stainless Steel 347 Flat Bars. These bars are specifically designed to offer exceptional resistance to intergranular corrosion and high-temperature oxidation. Crafted with cutting-edge technology and top-notch raw materials, they ensure consistent quality, strength, and durability. The Stainless Steel 347 is stabilized with niobium, which significantly boosts its resistance to carbide precipitation during welding and extended heat exposure. Sadiki Metals offers these flat bars in a variety of sizes and finishes to meet the diverse needs of industries like petrochemical, chemical processing, and power generation.
The Stainless Steel 347 Flat Bar is primarily composed of chromium (17–19%), nickel (9–13%), and niobium for stabilization, along with trace amounts of manganese, silicon, carbon, and phosphorus. It boasts impressive tensile strength of about 515 MPa, yield strength of 205 MPa, and an elongation of roughly 40%. This alloy shows remarkable resistance to oxidation at temperatures up to 870°C and maintains good creep strength. The inclusion of niobium effectively prevents intergranular corrosion, particularly after welding or thermal exposure. It also offers excellent mechanical stability, ductility, and weldability, making it a perfect choice for high-temperature applications.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 347 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-13.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| SS 347H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347 | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347 | 1.4961 | S34700 |
| SS 347H | 1.4550 | S34709 |
The primary alloying element in Stainless Steel 347 is niobium (Nb), which stabilizes the material against carbide precipitation during welding and high-temperature exposure. This enhances its resistance to intergranular corrosion and improves its overall high-temperature strength.
Stainless Steel 347 is most suitable for applications in the temperature range of 800°C to 1500°F (427°C to 815°C). This range allows it to maintain its strength, corrosion resistance, and stability, particularly in high-temperature environments like furnaces.
Typical dimensions of a Stainless Steel 347 flat bar range from 0.25 inches (6 mm) to 6 inches (150 mm) in thickness and 1 inch (25 mm) to 12 inches (300 mm) in width. Custom sizes are also available.
Stainless Steel 347 Flat Bars are extensively used in settings where there is continuous exposure to high temperatures and corrosive environments. They find common applications in heat exchangers, furnace components, exhaust manifolds, pressure vessels, and expansion joints. The alloy’s stability and resistance to sensitization make it particularly suitable for chemical processing, petrochemical plants, and power generation facilities. Additionally, it is utilized in aerospace components, food processing equipment, and marine applications where oxidation resistance and durability are crucial. Its outstanding weldability and formability further enhance the appeal of Stainless Steel 347 Flat Bars for various industrial uses.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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