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Brian Fasteners is a leading supplier, manufacturer and exporter of stainless steel 309/309S nuts, recognized for superior corrosion resistance and durability. Our range is available in various grades and configurations, providing excellent tensile strength and longevity. These nuts are designed to meet the stringent requirements of various industries, providing reliability and performance at high temperatures
Based in Houston, USA, Brian Fasteners is a reputable producer and supplier of premium stainless steel 309 and 309S nuts that are designed to perform exceptionally well in corrosive and high-temperature conditions. Our 309/309S nuts are made to meet strict industrial standards and guarantee long-term durability, making them ideal for use in applications involving heat and oxidation. Excellent resistance to scaling and thermal fatigue is provided by these austenitic stainless steel fasteners. Brian Fasteners offers reliable fastening solutions to industries like petrochemical, power generation, heat treatment, and furnace manufacturing with custom manufacturing options, stringent quality control, and timely delivery.
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.
About 23–25% chromium and 12–15% nickel make up stainless steel 309/309S nuts. The 309S grade has less carbon (≤0.08%) to enhance weldability and reduce carbide precipitation. These nuts maintain their mechanical strength at high temperatures and show outstanding resistance to oxidation up to 1000–1100°C. With an elongation of roughly 35–40% and a yield strength of about 205 MPa, the tensile strength normally falls between 515 and 690 MPa. For thermal and corrosion-prone applications, 309/309S nuts are dependable due to their mechanical and chemical characteristics, particularly in settings with frequent heating and cooling cycles.
Many high-temperature applications, such as boiler systems, kilns, incinerators, heat exchangers, and furnace components, use stainless steel 309/309S nuts. These nuts work particularly well in conditions that involve thermal cycling and oxidising gases. The ability of 309/309S to retain mechanical integrity at high temperatures makes it essential for industries like metallurgy, power generation, and petrochemicals. Because of its reduced carbon content, which improves resistance to intergranular corrosion, the 309S version is frequently chosen for welded components. These nuts are crucial for fastening components that are subjected to high temperatures, pressures, and harsh environments over extended periods of use.
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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