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Hamad Fasteners stands out as a top-notch manufacturer and supplier of industrial fasteners right in the heart of Riyadh, Saudi Arabia. We take pride in delivering products that are not only reliable but also high-performing. One of our standout offerings is the Stainless Steel 309/309S Stud Bolts, crafted specifically to resist heat and oxidation like a champ. These stud bolts are perfect for high-temperature settings and tough industrial tasks. Built to meet international quality standards, they promise durability, structural integrity, and resistance to corrosion. At Hamad Fasteners, we focus on precision engineering and reliable service, serving industries such as petrochemicals, power generation, and high-temperature furnace operations throughout the Kingdom and beyond.
Our Stainless Steel 309/309S Stud Bolts are made primarily from iron, chromium (22–24%), and nickel (12–15%), giving them exceptional oxidation resistance at temperatures soaring up to 1000°C. The 309S variant features a lower carbon content, which helps minimize the risk of carbide precipitation during welding. With a tensile strength of about 550 MPa and a yield strength close to 205 MPa, these bolts maintain excellent ductility and toughness, even when faced with thermal stress. Their impressive mechanical properties make them a go-to choice for applications that involve high temperatures, corrosive gases, or thermal cycling, ensuring they remain stable and effective in critical environments.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 24 |
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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
You’ll find Stainless Steel 309/309S Stud Bolts being utilized in high-temperature and heat-resistant applications across a variety of industries. They’re commonly found in furnace components, heat exchangers, combustion chambers, and kiln linings. Additionally, they’re ideal for the petrochemical and refining sectors, where they secure piping and equipment that endure thermal cycling and oxidizing conditions. The 309S grade is particularly favored in situations that require weldability without compromising corrosion resistance. These stud bolts create secure, long-lasting connections in extreme environments, making them indispensable for industries that demand consistent high performance.
Hamad Fasteners provides comprehensive documentation with our Stainless Steel 309/309S Stud Bolts, including commercial documentation, packaging information and quality certificates. We also offer comprehensive test reports, such as MTC per EN 10204/3.1b, PMI Testing, 100% radiography, and third-party inspections. This comprehensive documentation ensures transparency, proves quality and guarantees compliance, resulting in high customer satisfaction.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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