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Brian Fasteners, located in Houston, USA, has built a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel 309/309S Bolts. Known for their unwavering dedication to quality and precision engineering, Brian Fasteners provides high-performance fasteners that are engineered to thrive in tough industrial settings. Their Stainless Steel 309/309S Bolts boast impressive corrosion resistance, high-temperature strength, and remarkable durability, making them perfect for critical applications. With cutting-edge manufacturing facilities and rigorous quality control measures, Brian Fasteners guarantees consistent product reliability and customer satisfaction across various industries, including petrochemical, power generation, and construction, both in the United States and around the globe.
These Stainless Steel 309/309S Bolts are primarily made up of chromium (22–24%) and nickel (12–15%), along with trace amounts of manganese, silicon, and carbon. This combination provides excellent oxidation resistance, even at temperatures reaching 1000°C. Their mechanical properties include a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. The low carbon content in 309S enhances its weldability and reduces carbide precipitation during welding. These characteristics make 309/309S bolts particularly well-suited for high-temperature applications, where both strength and corrosion resistance are essential for optimal performance.
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 |
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.
Stainless Steel 309/309S Bolts are commonly found in environments that demand high-temperature resistance and corrosion protection. Typical applications include heat exchangers, furnace components, kilns, and fireboxes in industrial furnaces. They are also used in power plants, petrochemical facilities, and refinery systems, where they face thermal cycling and harsh chemical exposure. Thanks to their outstanding oxidation resistance and mechanical strength, these bolts are ideal for structural components that are subjected to elevated temperatures. In marine and chemical processing industries, 309/309S bolts provide reliable fastening solutions in corrosive environments.
Brian Fasteners offers a full range of documentation, including our stainless steel 309/309S bolts, trademarks, packaging information, and quality certificates. We offer comprehensive test reports such as MTC per EN 10204/3.1b, PMI Testing, 100% radiography, and third-party inspections. These documents ensure transparency and the quality and compliance of our bolts, resulting in complete customer satisfaction.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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