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Stainless Steel 309S Coil/Slitting Coil is a top-notch austenitic stainless steel product crafted for outstanding corrosion and heat resistance, especially in high-temperature settings. With a rich blend of chromium (23–25%) and nickel (12–15%), 309S boasts exceptional oxidation resistance, thermal stability, and toughness, making it a go-to choice for industrial furnaces, heat exchangers, and high-temperature structural applications. These coils are meticulously manufactured to ensure uniform thickness, a smooth surface finish, and consistent quality, which translates to a long service life and dependable performance. You’ll find Stainless Steel 309S Coils widely utilized in the petrochemical, power generation, and manufacturing sectors, where durability, high-temperature resilience, and corrosion protection are absolutely essential.
The composition of Stainless Steel 309S Coil/Slitting Coil primarily includes iron, chromium (23–25%), and nickel (12–15%), with a low carbon content (<0.08%) that enhances weldability and minimizes carbide precipitation. Its mechanical properties feature a tensile strength of about 515–720 MPa, a yield strength of around 205 MPa, and impressive elongation, all contributing to its toughness and durability. Thanks to its austenitic microstructure, it offers excellent formability, high-temperature strength, and resistance to oxidation and scaling. The low carbon content not only boosts weldability but also allows the alloy to endure prolonged exposure to temperatures reaching up to 1,050°C (1,922°F) in harsh environments.
| Item | Stainless Steel 309 coil(Hot rolled, cold rolled) | |
| Thickness | 0.025 to 3 mm and as per Customer Requirement | |
| Width | 3 mm to 2000 mm and as per Customer Requirement | |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | |
| Standard | JIS, AISI, ASTM, GB, DIN, EN, etc | |
| Surface | the surface and finish of stainless steel 309 coil: 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | |
| Brand: | Indian Origin, European Origin, Japanese Origin, US Origin, Korea Origin, Thailand Origin, Taiwan Origin | |
| Manufacturer: | POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO, Arcelor Mittal, VDM, Nippon Metal, Outokumpu | |
| Package | Shrink-wrapped ,Carton boxes,Wooden pallets,Wooden boxes ,Wooden crates Etc. required. |
| Grade | Fe | Cr | Ni | Mn | Si | C | P | S | |
| SS 309 | 60% | 23% | 14% | 2% | 1% | 0.20% | 0.045% | 0.030% |
| Yield Strength 0.2% Offset0 | Ultimate Tensile Strength | Elongation in 2 in. | Hardness | |||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) | |
| 45,000 | 310 | 85,000 | 586 | 50 | 202 (HBN) | |
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 309S Coil/Slitting Coil offers several advantages, including exceptional resistance to oxidation and corrosion, especially in high-temperature environments. Its low carbon content minimizes carbide precipitation, ensuring greater resistance to sensitization. The alloy’s high chromium and nickel content enhances its strength and durability in elevated temperatures. It provides excellent weldability, making it ideal for applications involving heat treatment and welding. Furthermore, Stainless Steel 309S maintains its mechanical properties in extreme conditions, offering superior performance in industries such as aerospace, chemical processing, and heat exchangers.
Yes, we offer custom sizes for Stainless Steel 309S Coils to meet specific project needs. Our team at Yunus Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@aaronsheetsplates.com.
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | GOST | EN | |
| SS 309 | 1.4828 | S30900 | SUS 309 | – | – | – | – |
Stainless Steel 309S Coils find their place in various industries that demand high-temperature strength, corrosion resistance, and reliability. In the power generation sector, they’re used for furnace components, boiler linings, and superheaters. The chemical and petrochemical industries rely on them for reactors, heat exchangers, and piping systems that face high temperatures. Additionally, industrial furnaces, kilns, and heating equipment make use of 309S coils for both structural and protective purposes. Their unique combination of thermal stability, corrosion resistance, and mechanical strength ensures they meet the rigorous demands of these applications.
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