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The Fasteners Mart, Mumbai, India-based, is a leading supplier and exporter of high-performance industrial fasteners for various industries across the globe. Our top-of-the-line products include Stainless Steel 309/309S Stud Bolts, which are renowned for their strength and superior resistance to high temperatures. The stud bolts are produced from Grade 309 and 309S austenitic stainless steel and provide better corrosion resistance and mechanical strength. They come in forms like double-end studs and threaded rods and are suitable for thermal stress and corrosive conditions applications.
Stainless Steel 309/309S Stud Bolts consist of iron, chromium (22–24%), and nickel (12–15%), with 309S having a reduced carbon content for enhanced weldability. Their physical properties are tensile strength of around 550 MPa, yield strength of about 205 MPa, and elongation of 40%. Physically, they possess a density of 7.9 g/cm³ and a melting range of 1354–1413°C. These properties have excellent resistance to oxidation, scaling, and thermal stress, so they can be used in high-temperature applications and demanding industrial processes.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 24 |
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 Stud Bolts are commonly applied in petrochemical, power generation, heat exchanger, thermal processing, and marine industries. They are particularly suitable for boilers, pressure vessels, furnaces, and exhaust systems due to their high-temperature strength and corrosion resistance. These bolts reliably operate under fluctuating temperatures and corrosive environments, providing safe connections and structural stability in severe conditions where mechanical integrity is of paramount importance for extended service lives.
The Fasteners Mart ensures prompt and safe delivery of Stainless Steel 309/309S Stud Bolts to domestic and global locations. We employ strong packaging materials like wooden boxes, bubble wrap, and special crates to avoid damage during shipping. Special packaging according to the client’s requirements is also provided to guarantee product safety and satisfaction.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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