Weston Stainless, located in Midland, UK, is a trusted supplier of high-quality stainless steel products, offering durable and reliable solutions to industries worldwide. Known for their commitment to excellence, they provide products that meet international standards. Stainless Steel 309 Nuts are made from an alloy containing 22-24% chromium and 12-15% nickel, offering exceptional resistance to high temperatures and oxidation. These nuts are available in various shapes, including hexagonal, square, and round, and are widely used in industries such as petrochemical, power generation, and chemical processing, where high performance is crucial.
Stainless Steel 309 Nuts are composed of 22-24% chromium, 12-15% nickel, with small amounts of manganese, silicon, and carbon. The mechanical properties include a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of 40%. The Brinell hardness is around 201 HB. Physically, these nuts 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. Their excellent resistance to oxidation, high-temperature strength, and corrosion make them ideal for demanding industrial applications in extreme environments.
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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An ideal corrosion resistant material for high humidity environments. Stainless steel 309 nuts are available in sizes from M6 to M36, perfect for furnace parts, heat exchangers and industrial applications requiring high thermal resistance.
Used to connect threaded cables under high temperature conditions. Sizes range from M6 to M36, making them suitable for use in furnace parts and heat exchangers, providing durability and heat resistance.
Nylon inserts flexible for secure fastening in high temperature environments. Available in sizes from M6 to M24, they are ideal for applications in heat exchangers and industrial furnaces where stability is required.
Enhanced weight distribution with integrated flanges. Sizes range from M6 to M24, suitable for high temperature applications such as furnace components and heat exchangers, providing both strength and thermal resistance
Designed for high pressure, high temperature applications. Available in sizes from M6 to M36, they are used in industrial machinery and furnace components, and offer exceptional strength and heat resistance.
Large surface area for efficient torque application. Sizes range from M6 to M24, making them suitable for hot environments such as heat exchangers and furnace parts, making them strong and durable.
Stainless Steel 309 Nuts are widely used in high-temperature and corrosive environments due to their excellent resistance to oxidation and corrosion. They are commonly applied in industries such as petrochemical, power generation, and chemical processing, where they are used in heat exchangers, boilers, and exhaust systems. These nuts are also ideal for applications in gas turbines, industrial machinery, and furnace components. Their ability to withstand extreme temperatures and aggressive environments makes them essential for critical applications requiring durable, reliable fastening solutions in demanding industrial settings.
Stainless Steel 309 Nuts 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 carefully packaged in protective materials such as wooden crates, cartons, or plastic wraps to prevent damage during transport. Delivery is prompt, with shipping options available via air, sea, or road, ensuring safe and timely delivery to global destinations while maintaining the product’s integrity throughout the process.







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