Home > Pipe Fittings > Stainless Steel 309S Pipe Fittings
Weston Stainless, based in Midland, UK, is a leading supplier of high-quality stainless steel products, offering reliable solutions to industries globally. They provide a wide range of materials and expert services to meet international standards, ensuring long-lasting performance and durability. Stainless Steel 309S Pipe Fittings are made from an alloy containing 22-24% chromium and 12-15% nickel, offering excellent resistance to oxidation and corrosion at high temperatures. These fittings are available in various shapes such as elbows, tees, reducers, and couplings, providing secure and reliable connections in demanding applications, particularly in the petrochemical and power generation industries.
Stainless Steel 309S Pipe Fittings are composed of 22-24% chromium, 12-15% nickel, and trace amounts of carbon, manganese, and silicon. The mechanical properties include a tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 40%. The Brinell hardness is approximately 201 HB. Physically, they have a density of 7.9 g/cm³, a melting point ranging from 1400-1450°C, and thermal conductivity of 15.1 W/m·K. These fittings provide excellent oxidation resistance, high-temperature strength, and corrosion resistance, making them ideal for demanding industrial applications.
| Grades | 201, 202, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Size | ½”NB to 48″NB in |
| Schedule | Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 309S | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 10.5 | – |
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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Stainless Steel 309S Pipe Fittings are widely used in high-temperature and corrosive environments due to their excellent oxidation resistance. They are commonly found in industries such as petrochemical, power generation, and chemical processing, where they are used in heat exchangers, boilers, and exhaust systems. These fittings are also used in furnace components, industrial machinery, and food processing units. Their resistance to extreme heat and corrosion makes them ideal for applications in harsh environments, ensuring durability and reliable performance in demanding industries.
high-temperature-resistant components known for their exceptional strength and oxidation resistance. Ideal for extreme heat environments, they are used in various industrial and aerospace applications.
high-temperature-resistant components used to join pipes through welding. Made from stainless steel 309S, they offer excellent strength, durability, and resistance to oxidation.
High-temperature-resistant components without welds, offering superior strength, oxidation resistance, and durability. They are ideal for demanding industrial applications and extreme heat environments.
Durable components that connect four pipes at a junction. Made from stainless steel 309S, they offer excellent heat resistance, strength, and corrosion durability.
T-junction by connecting three pipes. Made from stainless steel 309S, they provide exceptional heat resistance, strength, and corrosion resistance for industrial applications.
Stainless Steel 309S Pipe Fittings are supplied with comprehensive test certificates, including Mill Test Certificates (MTC), material certificates, and third-party inspection reports to ensure compliance with industry standards. They are securely packaged in protective materials such as wooden crates, cartons, or plastic wraps to prevent damage during transport. Delivery is efficient, with shipping options via air, sea, or road, ensuring timely and safe delivery to global destinations, while maintaining product integrity throughout the process.







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