Kyaw Stainless is a well-respected manufacturer and supplier located in Naypyidaw, Myanmar, specializing in high-quality Stainless Steel 309S Bolts that are perfect for high-temperature and corrosive settings. These bolts are crafted with precision to deliver outstanding strength, oxidation resistance, and durability. At Kyaw Stainless, every product is made under strict quality control measures using advanced techniques, ensuring consistent performance and reliability. You’ll find Stainless Steel 309S Bolts widely used in industries like petrochemical, furnace manufacturing, and power generation, where exceptional resistance to heat, scaling, and corrosion is essential for long-lasting service.
These bolts are made up of about 22–24% chromium, 12–15% nickel, and a lower carbon content (maximum 0.08%) compared to standard 309 grades, along with trace amounts of manganese, silicon, and phosphorus, with iron making up the rest. The reduced carbon content boosts resistance to intergranular corrosion and enhances weldability. With a tensile strength of around 515 MPa and a yield strength of about 205 MPa, these bolts also boast excellent ductility, oxidation resistance, and mechanical stability at temperatures reaching up to 1000°C.
|
Material |
Specification |
Standards |
Size |
Length |
|
Stainless Steel 309S Bolts |
ASTM, ASME and API |
ASTM B 193 / ASME SB 193 |
M02 to M30 |
3 mm To 200 mm |
| Element | SS 309S |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 309S |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
Contact us to get a quick quote for your requirement.
High-temperature resistant fasteners with excellent corrosion resistance, ideal for extreme environments. They offer durability and strength for applications in industrial, aerospace, and chemical processing sectors.
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Stainless Steel 309S Bolts are widely used in high-temperature, corrosive environments due to their excellent resistance to oxidation and corrosion. They are commonly used in industries such as petrochemical, power generation, chemical processing, and aerospace, where they are employed in heat exchangers, boilers, exhaust systems, and gas turbines. These bolts are also used in furnace components, industrial machinery, and food processing equipment. Their ability to withstand extreme heat and aggressive environments makes them essential for critical applications, ensuring reliable and durable fastening solutions in demanding conditions.
Stainless Steel 309S Bolts are frequently utilized in furnaces, heat exchangers, boilers, chemical processing plants, and refineries. Their remarkable high-temperature strength and corrosion resistance make them the go-to choice for fastening components that face thermal cycling and aggressive gases. They’re also popular in marine and power industries where strength and durability are crucial. Thanks to their excellent weldability, formability, and resistance to carburization, Stainless Steel 309S Bolts offer reliable fastening solutions that ensure secure joints, require minimal maintenance, and provide long-term performance in demanding industrial environments.
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