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Yasin Fasteners, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-quality stainless steel fasteners, particularly their Stainless Steel 309/309S Nuts. Known for their precision engineering and durability, this company is committed to delivering products that not only meet international standards but also address a wide range of industrial needs. With a strong emphasis on excellence, Yasin Fasteners guarantees reliable performance, consistent quality, and timely delivery for customers both at home and abroad. Their Stainless Steel 309/309S Nuts are designed to endure extreme conditions, offering impressive corrosion resistance, stability at high temperatures, and long-lasting mechanical integrity, making them a go-to choice for demanding applications.
These Stainless Steel 309/309S Nuts are primarily made up of iron, along with 23–25% chromium and 12–14% nickel, plus trace amounts of manganese, silicon, and carbon. This unique blend gives them outstanding resistance to oxidation and corrosion, especially when exposed to high temperatures. On the mechanical side, these nuts boast high tensile and yield strength, paired with good toughness and hardness. The “S” grade has a lower carbon content, which improves weldability and reduces carbide precipitation during heat treatment. Their thermal stability ensures they maintain their structural integrity even under prolonged heat exposure, while their excellent mechanical properties make them reliable for secure fastening in critical engineering applications.
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 Nuts find their place in various industries that demand high-temperature resistance and corrosion protection. They are perfect for chemical processing plants, power generation equipment, and petrochemical facilities, where harsh environments are the norm. These nuts are also utilized in furnace construction, heat exchangers, and boiler assemblies, ensuring long-term reliability even under thermal cycling. In the automotive and aerospace industries, they provide secure fastening for components that face extreme temperatures.
At Yasin Fasteners, we prioritize quality by offering multiple certifications on our 309/309S Nuts. Our comprehensive documentation includes commercial invoices, packaging information and certificates of departure. We perform comprehensive testing, offering reports on hardness testing, chemical analysis, positive material identification (PMI), pitting resistance tests, and more. In addition, we issue MTC, PMI test certificates and third-party inspection certificates in accordance with EN 10204/3.1b. This rigorous certification ensures that our fruits meet the highest standards and provide exceptional performance and reliability for demanding applications.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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