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Poang 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.
Stainless steel 309/309S fasteners are made of 23% chromium and 14% nickel, which increases their oxidation and corrosion resistance. The 309S variant has a lower carbon content, improving weldability. These fasteners exhibit excellent mechanical properties, including high tensile strength, toughness, and thermal stability up to 1000°C. The benefits of 309/309S fasteners include maintaining stability and strength at extreme temperatures, making them ideal for furnaces, ovens, and other high-temperature applications. They are returned and provide excellent corrosion resistance and long-term performance in harsh environments.
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 Fasteners contain 23% chromium and 14% nickel, which offers excellent resistance to oxidation and scaling at high temperatures. With tensile strengths greater than 515 MPa, superior toughness, and creep resistance, these bolts are mechanically stable up to 1,000°C. The lower carbon content in the 309S type makes it more weldable and reduces the possibility of carbide precipitation during welding. These chemical and mechanical properties make 309/309S fasteners reliable, durable, and resistant to corrosion, making them a reliable option for continuous or cyclic thermal service in industrial applications.
Stainless Steel 309/309S Fasteners find broad application where there is high heat resistance and mechanical strength needed. They are suitable for industrial furnaces, boilers, ovens, and exhaust systems with fault-free operation even at extreme temperatures. They remain durable in long terms in petrochemical, chemical, and electrical processes. They also serve in industrial heat exchangers, refineries, and power generation facilities with higher resistance to oxidation as well as corrosion. Their strength also makes them worth using in construction as well as heavy engineering industries, where they provide effective, secure, and long-term fastening solutions under extreme operating conditions.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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