Home > Stud Bolts > Stainless Steel 309 / 309s Stud Bolts
Stainless Steel 309/309S Stud Bolts are robust fasteners crafted for high-temperature and corrosive settings. The Grade 309 offers impressive mechanical strength, while 309S, with its lower carbon content, enhances weldability and minimizes the risk of carbide precipitation. These stud bolts are made to exacting standards, guaranteeing precise dimensions, dependable threading, and durability. Their resistance to corrosion, longevity, and ability to handle thermal cycling make them perfect for critical applications in industries like petrochemical, power generation, and furnace equipment, ensuring secure and trustworthy fastening even in tough conditions.
These stud bolts are primarily made of chromium and nickel, with optional silicon and manganese added to boost oxidation resistance and mechanical properties. The Grade 309S features lower carbon to avoid sensitization during welding. Mechanically, these bolts showcase high tensile strength, remarkable toughness, and solid resistance to creep, fatigue, and thermal stress. Their metallurgical structure guarantees dimensional stability and resistance to corrosion, pitting, and scaling at high temperatures. These characteristics make them ideal for high-temperature piping systems, boilers, and structural assemblies that need strong, durable fasteners.
|
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 Khaled Stainless, we are proud to be the largest supplier, manufacturer, and exporter of Stainless Steel 309 / 309s Stud Bolts in Cairo, Egypt. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the Egypt, 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.
Khaled 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.
Stainless Steel 309/309S Stud Bolts find extensive use in sectors like petrochemical processing, oil and gas, power plants, refineries, and furnace manufacturing. They are perfect for securing flanges, pressure vessels, heat exchangers, and high-temperature pipelines. Their resistance to corrosion and oxidation makes them suitable for chemical plants, incinerators, and marine environments. These stud bolts ensure reliable, leak-proof connections under thermal cycling and high-pressure conditions, contributing to operational safety.
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