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Mira Fasteners stands out as a top-notch manufacturer and supplier of Stainless Steel 309/309S Bolts, proudly based in Kuala Lumpur, Malaysia. They’ve built a solid reputation for providing high-performance fasteners that adhere to international quality standards, making them a go-to choice for industries that operate under tough conditions. Their Stainless Steel 309/309S Bolts are specifically designed to endure high temperatures and corrosive environments, ensuring they remain durable and strong in critical applications. With a strong focus on precision manufacturing, timely delivery, and a client-centered approach, Mira Fasteners has earned the trust of customers across various sectors, including petrochemical, power generation, and heat treatment facilities.
These Stainless Steel 309/309S Bolts are primarily made up of chromium (22–24%) and nickel (12–15%), with the 309S variant featuring lower carbon content to enhance weldability and reduce carbide precipitation. They boast impressive oxidation resistance at temperatures reaching up to 1000°C. In terms of mechanical properties, they offer a tensile strength of around 550 MPa, yield strength of 205 MPa, and an elongation of 40%. These bolts maintain their structural integrity even in high-stress and high-heat situations while providing exceptional toughness. Their unique composition helps them resist scaling and thermal fatigue, making them perfect for long-term use in high-temperature 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 bolts are used in high-temperature environments because of their excellent oxidation and corrosion properties. Typical applications include industrial furnaces, heat exchangers and air filtration systems that require durability and strength. They are also used in petroleum and power plants for equipment at extreme temperatures. Their ability to withstand high temperatures and resist scaling makes them ideal for furnace coatings, reactor vessels and chemical plants.
Stainless Steel 309/309S Bolts find extensive application in areas that demand heat and corrosion resistance. They are commonly used in petrochemical plants, power stations, thermal processing units, and refineries. These bolts are particularly well-suited for furnace components, heat exchangers, boilers, and exhaust systems where temperatures are consistently elevated. Additionally, they are utilized in kilns, incinerators, and structural supports that experience thermal cycling. The low carbon content of 309S makes these bolts ideal for welded assemblies, effectively preventing intergranular corrosion and ensuring long-lasting performance in challenging industrial environments.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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