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Hamad Fasteners, based in Riyadh, Saudi Arabia, has built a solid reputation as a reliable manufacturer and supplier of top-notch fastening solutions. They cater to a variety of industries, including oil and gas, petrochemicals, marine, construction, and power generation. Known for their precision engineering and dependability, the company offers a diverse range of products that are specifically designed to thrive in tough operating conditions. Among their offerings, the Stainless Steel 309/309S Fasteners stand out for their remarkable high-temperature strength, outstanding oxidation resistance, and durability, making them the go-to choice for applications that demand secure fastening in extreme heat and corrosive environments.
These fasteners are made from a blend of chromium (22–24%) and nickel (12–15%), which gives them impressive oxidation resistance up to 1000°C. The Grade 309 variant has a slightly higher carbon content, enhancing its strength at elevated temperatures, while 309S features lower carbon levels to minimize carbide precipitation during welding. With a tensile strength of around 515 MPa and a yield strength of about 205 MPa, these fasteners also boast excellent creep resistance. Their unique combination of corrosion resistance and high-temperature stability guarantees reliable performance in even the most demanding applications.
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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The stainless steel 309/309S fastener is required for high heat resistance and power handling. It is widely used in the chemical, electrical and petrol industries, where durability is required under extreme conditions. These fasteners also play an important role in industrial boiler heat exchangers and exhaust systems for reliable operation in high-temperature environments. They are used in the construction industry and industrial engineering to provide excellent resistance, do not deteriorate, and are durable. Their robustness and environmental resistance make them ideal for high-efficiency and rugged performance applications.
Stainless Steel 309/309S Fasteners are commonly found in settings where heat and corrosion resistance are crucial. You’ll often see them in furnaces, heat exchangers, boilers, kilns, and refinery equipment. Their reliability extends to chemical processing, marine systems, power generation units, and exhaust components, where resistance to oxidation and scaling is vital. These fasteners maintain their mechanical strength and integrity even under fluctuating thermal cycles, ensuring they deliver long-lasting performance and safety in high-stress, elevated temperature situations.
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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