Aditya Stainless is a well-respected manufacturer and supplier of Stainless Steel 309S Bars based in Kolkata, India, serving a wide range of industrial needs. The SS 309S variant is a low-carbon form of grade 309, specifically crafted for better weldability and resistance to high-temperature oxidation. These bars come in various shapes, including round, square, hex, and flat, making them perfect for construction, fabrication, and structural support. With outstanding durability, strength, and corrosion resistance, Aditya Stainless delivers top-notch 309S bars designed to meet the rigorous demands of industries such as chemical processing, thermal processing, and furnace engineering.
Stainless Steel 309S Bars are made up of 22–24% chromium, 12–15% nickel, and a maximum of 0.08% carbon, which gives them impressive resistance to oxidation and scaling at temperatures up to 980°C. This alloy boasts a tensile strength of about 550 MPa, a yield strength of 205 MPa, and an elongation of 40%, providing excellent high-temperature strength and ductility. The lower carbon content helps reduce carbide precipitation during welding, enhancing intergranular corrosion resistance. These mechanical properties make 309S bars ideal for applications that involve thermal cycling and regular exposure to heat.
| Grade | Stainless Steel 309S (UNS 30908) |
| Standard | ASTM A276 / ASME SA276 |
| Diameter | 25mm to 152mm dia |
| Condition | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
| Finish | Bright, Polish & Black |
| Type | Round/Square/ Hexagonal/ Rectangular |
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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We ensures the highest quality of stainless steel 309S tiles through rigorous testing and certification. Each product undergoes extensive testing, including chemical composition, mechanical properties and durability testing. Certified to accepted industry standards, our breweries deliver efficiency, reliability and compliance, making them ideal for complex applications.
Stainless Steel 309S Round Bars are designed for high-temperature applications, offering exceptional oxidation resistance and durability. They are ideal for components in furnaces, heat exchangers, and other high-heat environments.
Stainless Steel 309S Flat Bars provide outstanding heat resistance and strength, suitable for applications such as heat shields, furnace parts, and structural components exposed to high temperatures and corrosive environments.
Stainless Steel 309S Square Bars are used in high-temperature settings where heat resistance and durability are critical. They are commonly employed in manufacturing parts for the aerospace industry, industrial equipment, and heat exchangers.
Stainless Steel 309S Rectangular Bars are ideal for high-temperature applications requiring superior oxidation resistance. They are often used in furnace components, structural supports, and industrial parts that endure extreme heat and corrosive conditions.
Stainless Steel 309S Hexagonal Bars are perfect for applications needing high-temperature performance and corrosion resistance. They are utilized in industrial processes, furnace parts, and equipment subjected to severe thermal conditions.
Stainless Steel 309S T-Bars offer excellent heat resistance and strength, making them suitable for high-temperature structural applications. They are commonly used in heat exchangers, support structures, and furnace components.
Stainless Steel 309S Bars find extensive use in high-temperature and corrosive settings, such as furnaces, boilers, thermal oxidizers, and kilns. Their remarkable oxidation resistance and structural integrity make them perfect for heat treatment equipment, welded furnace components, and refinery parts. They are also utilized in petrochemical plants, power generation facilities, and industrial exhaust systems. The low carbon content ensures improved weldability, making these bars an excellent choice for fabricated assemblies that face high heat. Furthermore, their adaptability extends to automotive, aerospace, and marine applications.
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