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Brian Fasteners is a leading supplier, manufacturer and exporter of stainless steel 309/309S fasteners, known for their corrosion resistance and superior durability. Our range is available in many grades and configurations and is known for its excellent tensile strength and durability, serving life. These fasteners are designed to meet the demanding requirements of various industries, providing reliability and exceptional performance at high temperatures.
Premium-grade stainless steel 309 and 309S fasteners made to thrive in corrosive and high-temperature conditions are available from Brian Fasteners, a reputable manufacturer and supplier with headquarters in Houston, USA. High-alloy austenitic stainless steel is used in the precision engineering of our fasteners to give them exceptional resistance to thermal cycling, scaling, and oxidation. While 309S has less carbon for improved weldability and less carbide precipitation, 309 provides strong high-temperature strength. For the petrochemical, power generation, and thermal processing industries, Brian Fasteners offers fast turnaround, stringent quality control, and customised solutions that are perfect for industrial operations needing dependable fastening at high temperatures.
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 and 309S fasteners are made of 12–15% nickel and 23–25% chromium. 309S has less carbon (≤0.08%) for better weldability and less carbide precipitation. These fasteners offer strong structural integrity under heat stress and show outstanding resistance to oxidation up to 1100°C. Tensile strength ranges from 515 to 690 MPa, yield strength is approximately 205 MPa, and elongation is roughly 40%. While 309S is the recommended choice for welded assemblies and corrosive, high-temperature service environments, both grades retain mechanical stability in extremely hot conditions.
For high-temperature applications like boiler systems, kilns, furnaces, heat exchangers, and incinerators, stainless steel 309 and 309S fasteners are perfect. They are crucial to the thermal processing industries because of their exceptional resistance to oxidation and scaling. Because of its lower carbon content, 309S is preferred for components that need to be welded, while 309 grade is frequently utilised in structural and load-bearing applications. These fasteners, which are frequently used in metallurgical operations, power generation facilities, and petrochemical plants, guarantee dependable and long-lasting performance in demanding settings where intense and constant exposure to heat, stress, and corrosive gases occurs.
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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