Kyaw Stainless, a well-respected manufacturer and supplier located in Naypyidaw, Myanmar, specializes in top-notch Stainless Steel 304H Flanges designed for outstanding performance in high-temperature and corrosive settings. These flanges are crafted from high-quality raw materials and cutting-edge production methods to guarantee durability, strength, and precision. The high-carbon variant of 304, Stainless Steel 304H, offers enhanced tensile strength and better heat resistance, making it perfect for applications that require elevated temperatures. Kyaw Stainless provides a variety of 304H flanges, including weld neck, slip-on, blind, and threaded options, catering to the diverse needs of industries like petrochemical, power generation, and marine engineering.
Stainless Steel 304H Flanges are primarily composed of chromium (18–20%), nickel (8–12%), and carbon (0.04–0.10%), along with trace amounts of manganese (≤2%), silicon (≤1%), phosphorus (≤0.045%), and sulfur (≤0.03%). The higher carbon content enhances strength at high temperatures and improves creep resistance while still offering excellent corrosion and oxidation resistance. In terms of mechanical properties, these flanges boast a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. They also exhibit remarkable toughness, hardness, and thermal stability, ensuring reliable performance under continuous service at temperatures up to 870°C.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 11 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Stainless Steel 304H Flanges have widespread applications across high-temperature and corrosion-resistance industries. The flanges find applications in petrochemical, power plant, oil & gas, and chemical processing plant facilities, where they seal pipes, valves, and equipment efficiently. The flanges are most suited for superheater parts, boilers, and heat exchanger components, owing to the strong properties they possess at higher temperatures. Moreover, they find applications in the marine, food processing, and pharmaceutical industries for their hardness and resistance to oxidation. They can endure thermal stress and pressure due to which they are in demand for tough industrial applications.
Designed for high-stress applications, featuring a long tapered neck that provides a strong, continuous weld connection. They offer excellent strength and resistance to leakage.
Designed for ease of assembly and disassembly. They feature a loose fit, allowing for easy alignment and maintenance, with excellent resistance to corrosion.
Used to connect pipes of different diameters, providing a smooth transition between sizes. They ensure a secure, leak-proof joint while offering strong corrosion resistance and durability.
Stainless Steel 304H Flanges find extensive use in industries where high strength and heat resistance are crucial. They are particularly well-suited for boilers, heat exchangers, pressure vessels, and superheater tubes. Additionally, these flanges are commonly utilized in refineries, petrochemical plants, power generation systems, and furnace components that operate at elevated temperatures. Thanks to their impressive mechanical and corrosion-resistant properties, 304H flanges are also favored in marine and structural applications. With their exceptional durability, weldability, and resistance to scaling, Stainless Steel 304H Flanges are a reliable choice for demanding environments.
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