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Ramu Fasteners stands out as a top manufacturer and supplier of Stainless Steel 309/309S Bolts in Hyderabad, offering high-performance fastening solutions tailored for high-temperature and corrosive environments. With state-of-the-art manufacturing facilities and strict quality controls, the company guarantees that its bolts meet international standards and customer requirements. The Stainless Steel 309/309S Bolts from Ramu Fasteners are celebrated for their outstanding oxidation resistance, strength, and durability even at elevated temperatures. Catering to sectors like power generation, petrochemicals, refineries, and furnace equipment manufacturing, Ramu Fasteners provides dependable products designed for longevity and safety.
Stainless Steel 309/309S Bolts are crafted from an austenitic stainless steel alloy rich in chromium and nickel. The 309S grade features lower carbon content compared to 309, which helps minimize carbide precipitation during welding. This unique composition ensures excellent oxidation resistance and stability at high temperatures. In terms of mechanical properties, these bolts deliver impressive tensile and yield strength, high toughness, and remarkable creep resistance. Their non-magnetic characteristics and resistance to scaling make them ideal for continuous high-temperature applications in challenging industrial settings.
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 find extensive use in high-temperature applications and oxidizing environments. They are commonly utilized in furnace components, heat exchangers, boilers, pressure vessels, and high-temperature piping systems. These bolts are heavily relied upon in power plants, petrochemical and chemical processing industries, refineries, and thermal equipment manufacturing. Additionally, they are well-suited for flue gas systems, kiln parts, and heat treatment equipment. Their ability to maintain strength and resist oxidation at elevated temperatures ensures secure fastening and long-term reliability.
Ramu Fasteners offers a full range of documentation, including our stainless steel 309/309S bolts, trademarks, packaging information, and quality certificates. We offer comprehensive test reports such as MTC per EN 10204/3.1b, PMI Testing, 100% radiography, and third-party inspections. These documents ensure transparency and the quality and compliance of our bolts, resulting in complete customer satisfaction.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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