Home > Stud Bolts > Stainless Steel 309 / 309s Stud Bolts
Nestled in the industrial heart of Manama, Bahrain, Niazi Stainless has built a reputation for precision and reliability in metal supply. We specialize in providing robust fastener solutions, with our Stainless Steel 309 and 309S stud bolts standing as a testament to our commitment to quality. Specifically engineered for challenging environments, these fasteners are the trusted choice for industries where heat and corrosion are constant concerns, ensuring your projects are built on a foundation of unwavering strength and durability.
The exceptional performance of these stud bolts comes from their specific composition, which includes higher levels of chromium and nickel than standard stainless grades. This unique formula grants them superior resistance to oxidation, making them stable under intense heat. The “S” in 309S indicates a lower carbon content, which helps prevent carbide precipitation during welding. This results in excellent mechanical properties, including high tensile strength and good ductility, allowing them to maintain their integrity under significant stress and thermal cycling.
|
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 |
Contact us to get a quick quote for your requirement.
At Niazi Stainless, we are proud to be the largest supplier, manufacturer, and exporter of Stainless Steel 309 / 309s Stud Bolts in Manama, Bahrain. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the Bahrain, we maintain a vast inventory of over 16,000 tons of premium-quality materials, ensuring we have the stock readily available to meet your demands.
Designed with threads on both ends, these stud bolts are ideal for applications requiring secure fastening from both sides. They offer excellent resistance to high-temperature environments and corrosion.
These stud bolts feature threaded ends for secure attachment, particularly suited for high-temperature and industrial applications. Stainless Steel 309S provides superior resistance to oxidation and scaling.
Made from Stainless Steel 309, these stud bolts provide excellent strength and resistance to heat and corrosion. Ideal for high-temperature settings, they ensure reliable performance in demanding environments.
Manufactured to meet DIN 1.4833 standards, these stud bolts are used in high-stress applications requiring resistance to extreme temperatures and corrosive environments. They offer robust performance and durability.
These stud bolts are crafted from UNS S30908, a material known for its excellent resistance to heat, oxidation, and corrosion. They are perfect for high-temperature applications in industries like power generation and chemical processing.
Featuring a flush head design, these stud bolts are ideal for applications where a smooth surface is required. Made from Stainless Steel 309S, they offer resistance to high temperatures and provide secure fastening.
Niazi Stainless offers quality Stainless Steel 309 / 309S Stud Bolts with consistent performance, supported by a wide array of tests such as hardness testing, spectro analysis, PMI, and flaring tests. We conduct micro and macro tests, pitting resistance, and IGC tests to provide the best product in every order. Besides the rigorous testing process, we also offer full documentation, which provides our customers with commercial invoices, a packaging list with information of net weights and gross weight, the number of the boxes, and labels. Our legalized or attested Certificate of Origin along with Third-Party Inspection Certificates provides total assurance of our commitment to delivering premium products and unmatched customer satisfaction.
Due to their high-temperature capabilities, these stud bolts are indispensable in demanding settings. You will commonly find them securing critical components in industrial furnaces, heat exchangers, and powerful gas turbines. They are also essential in the petrochemical and power generation industries, where equipment faces relentless thermal and corrosive challenges. Essentially, wherever extreme heat is a factor, our 309 and 309S stud bolts provide the secure, long-lasting fastening needed to ensure operational safety and continuity.
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