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Rinku 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.
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.
At Rinku Fasteners, our commitment to quality is unwavering, as evidenced by the rigorous testing procedures applied to all Stainless Steel 309/309S fasteners before shipment. These advanced tests include hardness, chemical analysis by Spectro analysis, positive material identification (PMI), levelling, micro-macro, pitting resistance, fire and intergranular corrosion (IGC) testing. Furthermore, we offer third-party inspection certifications to ensure our fasteners are of the highest quality and reliable for demanding applications.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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