Ed Stainless exports high-performance Stainless Steel 309S Bars from its Houston plant catering to industries requiring outstanding oxidation and high-temperature resistance. SS 309S is low-carbon type 309 that is specifically suitable for welding and high-temperature applications. Having better high-temperature strength and corrosion resistance, these bars are employed in furnace components, heat exchangers, and petrochemical processing equipment. Ed Stainless guarantees that all 309S bars conform to ASTM A276 standards, providing consistent surface finish, exact dimensions, and durable performance. Our dedication to quality makes us the go-to partner for industrial-grade stainless solutions in North America and around the globe.
Stainless Steel 309S Bars have 22–24% chromium and 12–15% nickel, with a maximum 0.08% carbon content. The lower carbon increases weldability and reduces carbide precipitation when welding. 309S bars have a tensile strength of 550–750 MPa, yield strength of about 205 MPa, and elongation of 35–40%. They have structural stability up to 980°C and resist sulfur-containing atmospheres and oxidation. SS 309S is non-magnetic in the annealed state and offers superior thermal stability and corrosion resistance, and is thus used in cyclic heating and cooling 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 find application in high-temperature situations like furnaces, kilns, boilers, and heat exchanger systems. They find extensive use in petrochemical facilities, thermal processing equipment, and aircraft industries. The oxidation and scaling resistance of the alloy renders it useful for radiant tubes, refractory anchors, and combustion chambers. In welded construction, SS 309S avoids carbide precipitation, maintaining long-term function in thermal cycling situations. Its corrosion resistance also enables it to operate in mildly corrosive or oxidizing environment, such as flue gas scrubbers and refinery equipment. Ed Stainless supplies 309S bars that work effectively when exposed to constant heat.
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