Home > Stud Bolts > Stainless Steel 309 / 309s Stud Bolts
Kyaw Stainless, a trusted manufacturer and supplier based in Naypyidaw, Myanmar, offers high-quality Stainless Steel 309/309S Stud Bolts that provide exceptional strength, corrosion resistance, and thermal stability in demanding industrial environments. These stud bolts are precision-engineered using premium raw materials and advanced manufacturing techniques to ensure excellent performance in high-temperature and oxidizing conditions. Stainless Steel 309/309S Stud Bolts are widely appreciated for their durability, dimensional accuracy, and long service life. Kyaw Stainless supplies reliable fastening solutions that meet international quality standards for industries such as petrochemical, power generation, and heat treatment.
Stainless Steel 309/309S Stud Bolts consist of chromium (22–24%), nickel (12–15%), and carbon (≤0.20% for 309 and ≤0.08% for 309S), along with manganese (≤2%), silicon (≤1%), phosphorus (≤0.045%), and sulfur (≤0.03%). The high chromium and nickel content provides outstanding resistance to oxidation and scaling, while the lower carbon version (309S) enhances weldability and minimizes carbide precipitation. These bolts exhibit a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of 40%. They maintain mechanical stability, strength, and toughness even under cyclic heating and prolonged thermal exposure.
|
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 |
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Stainless Steel 309/309S Stud Bolts are widely used in high-temperature and corrosive environments due to their excellent resistance to oxidation and corrosion. They are commonly applied in industries such as petrochemical, power generation, and chemical processing, where they are used in heat exchangers, boilers, turbines, and exhaust systems. These stud bolts are also ideal for furnace components, industrial machinery, and food processing equipment. Their ability to withstand extreme heat and aggressive environments makes them essential for critical applications requiring durable, reliable fastening solutions in demanding conditions
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.
Stainless Steel 309/309S Stud Bolts are made from an alloy containing 22-24% chromium and 12-15% nickel, with small amounts of manganese, silicon, and carbon. The mechanical properties include a tensile strength of around 515 MPa, yield strength of 205 MPa, and elongation of 40%. The Brinell hardness is approximately 201 HB. Physically, they have a density of 7.9 g/cm³, a melting point between 1400-1450°C, and thermal conductivity of 15.1 W/m·K. These stud bolts offer excellent oxidation resistance, high-temperature strength, and durability, making them ideal for demanding industrial applications.
Stainless Steel 309/309S Stud Bolts are extensively used in high-temperature and corrosive environments where secure and durable fastening is critical. They are ideal for use in furnaces, boilers, exhaust systems, heat exchangers, and thermal process equipment. Industries such as petrochemical, cement, refineries, and power generation rely on these bolts to assemble components exposed to oxidizing and carburizing atmospheres. Their superior resistance to heat, corrosion, and scaling ensures reliable performance and long service life, making them a preferred choice for fastening applications in harsh and high-stress industrial conditions.
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