Chanchai Stainless, Bangkok, Thailand, is a trusted producer and supplier of high-quality stainless steel products, such as **Stainless Steel 309S bars**. These bars are renowned for their superior high-temperature strength and corrosion resistance, making them suitable for operating in harsh industrial environments. Chanchai Stainless produces Stainless Steel 309S bars in different sizes, lengths, and finishes to meet the needs of industries like heat treatment, petrochemical, power generation, and furnace manufacturing. With international quality standards, precision machining, and prompt delivery, Chanchai Stainless is a reliable provider of stainless steel bar solutions in Thailand and Southeast Asia.
Stainless Steel 309S bars contain about 22–24% chromium and 12–15% nickel, along with low carbon to improve weldability and reduce carbide precipitation during welding. The bars provide good tensile strength (about 515 MPa), satisfactory ductility, and excellent oxidation and scaling resistance up to 1000°C. Their chemistry ensures consistent performance under thermal cycling as well as moderate corrosion exposure and thus are used for structural as well as high-temperature applications.
| 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 |
Contact us to get a quick quote for your requirement.
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 extensively applied in processes that involve durability, heat resistance, and corrosion protection. They are commonly used in the fabrication of furnace components, structural elements in thermal processing equipment, support bars for heat exchangers, and shafts in power and petrochemical facilities. Due to their oxidation and thermal stress resistance, they are well suited for long-term applications in high-temperature operations. They find application in welded structures as well as machine components subject to severe conditions, with the advantage of uniform strength, formability, and extended service life.
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