Weston Stainless, based in Midland, UK, is a leading supplier of high-quality stainless steel products, renowned for providing durable and reliable solutions to industries worldwide. They are committed to offering products that meet international standards. Stainless Steel 309S Bolts are made from an alloy containing 22-24% chromium and 12-15% nickel, providing excellent resistance to high temperatures and corrosion. These bolts are typically available in hexagonal, square, and round shapes and are commonly used in industries like petrochemical, power generation, and chemical processing, where high-performance fastening solutions are essential.
Stainless Steel 309S Bolts 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 an elongation of 40%. The Brinell hardness is around 201 HB. Physically, these bolts have a density of 7.9 g/cm³, a melting point between 1400-1450°C, and thermal conductivity of 15.1 W/m·K. These bolts provide excellent oxidation resistance, high-temperature strength, and corrosion resistance, making them ideal for harsh industrial applications.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 309S Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 309S |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 309S |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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High-temperature resistant fasteners with excellent corrosion resistance, ideal for extreme environments. They offer durability and strength for applications in industrial, aerospace, and chemical processing sectors.
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A hexagonal head with an integrated flange, offering high-temperature resistance and secure clamping in demanding applications, including industrial and structural uses.
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Stainless Steel 309S Bolts are widely used in high-temperature, corrosive environments due to their excellent resistance to oxidation and corrosion. They are commonly used in industries such as petrochemical, power generation, chemical processing, and aerospace, where they are employed in heat exchangers, boilers, exhaust systems, and gas turbines. These bolts are also used in furnace components, industrial machinery, and food processing equipment. Their ability to withstand extreme heat and aggressive environments makes them essential for critical applications, ensuring reliable and durable fastening solutions in demanding conditions.
Stainless Steel 309S Bolts are supplied with detailed test certificates, including Mill Test Certificates (MTC), material certificates, and third-party inspection reports to ensure compliance with industry standards. These bolts are securely packaged using protective materials such as wooden crates, cartons, or plastic wraps to prevent damage during transit. Delivery is efficient, with shipping options available via air, sea, or road, ensuring safe and timely delivery to global destinations while maintaining the integrity of the products throughout the process.







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