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Yunus Sheets and Plates, based in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-quality stainless steel products, with a particular focus on Stainless Steel 347 Sheets and Plates. Known for their commitment to quality, precision, and reliability, they cater to a diverse array of industries that demand high-performance materials. Stainless Steel 347 is an austenitic alloy that’s stabilized with niobium, providing exceptional resistance to intergranular corrosion and outstanding performance in high-temperature settings. With advanced manufacturing techniques and strict quality control, Yunus Sheets and Plates ensures their products meet international standards, making them a trusted partner for industrial and engineering needs around the globe.
When it comes to the composition and mechanical properties of Stainless Steel 347 Sheets and Plates, these materials are stabilized austenitic stainless steels primarily made up of Chromium (17–19%), Nickel (9–13%), and Niobium (Columbium) to enhance their resistance to intergranular corrosion. The carbon content is usually kept to ≤0.08%, along with trace amounts of Manganese, Silicon, and Sulfur. These plates boast a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 35–40%. They maintain their strength and corrosion resistance even at elevated temperatures, making them perfect for high-heat applications. Plus, they offer excellent weldability and resistance to stress corrosion cracking.
| Specifications | : | ASTM A240 / ASME SA240 |
| Thickness | : | 4mm-100mm |
| Width | : | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | : | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Surface | : | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
| Finish | : | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | : | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 347 | 1.4550 | S34700 | SUS 347 | – | 08Ch18N12B | – | X6CrNiNb18-10 |
| Material | Size | Thickness |
| PLATES & SHEETS | 1000 mm x 2000 mm | 0.1mm To 100 mm Thickness |
| 1220 mm x 2440 mm (4′ x 8′) | ||
| 1250 mm x 2500 mm | ||
| 1500 mm x 3000 mm | ||
| 2000 mm x 4000 mm | ||
| 2000 mm x 2000 mm |
| Surface Finish | Definition | Application |
|---|---|---|
| 2B | Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
| BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
| NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
| NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
| HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building Construction. |
| NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 347 Sheets and Plates find extensive use in industries that need stability at high temperatures and corrosion resistance post-welding. You’ll often see them in heat exchangers, boiler tubes, superheaters, aircraft exhaust systems, and chemical processing equipment. The niobium stabilization helps prevent carbide precipitation, making these plates ideal for welded structures that face high thermal stress. They’re also commonly used in refinery applications, showcasing their versatility and reliability in demanding environments.
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