Nakamura Stainless, based in Pulau Ujong, Singapore, is a reliable maker and supplier of high-quality stainless steel products, including stainless steel 309S bars. These bars are made for high-temperature and corrosive settings. They offer excellent resistance to oxidation, scaling, and thermal fatigue. Stainless steel 309S is the low-carbon version of 309. It provides better weldability and less risk of sensitization while keeping strong mechanical properties at high temperatures. Nakamura Stainless focuses on precise production and strict quality control, making 309S bars suitable for furnace parts, heat treatment, and chemical processing.
Stainless steel 309S bars usually have 23 to 25% chromium and 12 to 15% nickel. The low carbon content helps prevent carbide precipitation during welding. These bars have a tensile strength between 520 and 750 megapascals and maintain mechanical stability at temperatures up to 1150°C. The high chromium and nickel content gives them excellent resistance to oxidation and thermal degradation in extreme conditions.
| 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 are commonly used in industries that need durable and heat-resistant materials. Some typical uses include making furnace components, heat exchangers, boiler parts, and chemical reactors. Their ability to endure high temperatures, thermal cycling, and corrosive environments ensures lasting performance and structural integrity in demanding conditions. These bars are a top choice for heavy-duty industrial applications.
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