Home > Stainless Steel Flanges >Stainless Steel 309H Flanges
| Specifications | ASTM A240 / ASME SA240 |
| Thickness | 4mm-100mm |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hairline, sand blast, Brush, etching, etc |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Grade | C | Mn | Si | P | S | Cr | Ni | Fe | |
| SS 309H | 0.04-0.10 | 2.0 | 0.75 | 0.045 | 0.03 | 22.0-24.0 | 15.0 | 58.0-63.0 | |
| Grade | Tensile Strengtd ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) max |
| 309H | 40 | 30 | 40 | 217 |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering innovative solutions for every piping requirement you have. With cutting-edge production facilities strategically situated in the New Zealand, we maintain an extensive stock of more than 25,000 tons of top-quality materials ready and available for immediate supply.
Get in touch with us for a fast quote tailored to your needs.
We provide these Stainless Steel 309H Flanges in accordance with DIN, ISO, JIS or ANSI Standard.
High-Temperature Resistance: Stainless steel 309H is purpose-built for high-temperature service, enduring temperatures as high as 1000°C (1832°F) while retaining its mechanical properties. This makes it well-suited for furnaces and other industrial uses where intense heat is present.
Easy to manufacture: Stainless steel 309H welds and fabricates readily, making it simple to produce and form to satisfy particular system needs. This renders it a flexible material for flange design and a range of functions.
Strength and durability: Stainless steel 309H demonstrates outstanding strength and toughness even at raised temperatures. This guarantees the flange’s reliability and durability in tough applications where mechanical strength matters.
Oxidation Resistance: The elevated chromium content of stainless steel 309H delivers remarkable oxidation resistance, even under high temperatures. This characteristic helps stop scale formation and preserves the material’s integrity in high-temperature oxidizing conditions.
Corrosion Resistance: Stainless steel 309H holds high amounts of chromium and nickel, delivering excellent corrosion resistance across a range of corrosive settings, including acidic and alkaline solutions. This makes it appropriate for use in medicine, marine environments and other corrosives.
Stainless Steel 309H Flanges possess outstanding mechanical properties and offer resistance to wear, corrosion, and elevated temperatures, making them common across many industries. These flanges see extensive use in the oil and gas, petrochemical, power generation, and aerospace sectors. They serve a key role in connecting equipment, valves, and piping systems. Thanks to their remarkable strength, toughness, and wear resistance, they are ideal for applications subjected to demanding operating conditions, including high temperatures, high pressures, and corrosive settings.
Petrochemical Industry: Stainless steel 309H flanges are employed in refineries and petrochemical facilities subjected to elevated temperatures and corrosive conditions. They offer outstanding resistance to high-temperature oxidation and sulfidation.
Aerospace and Aircraft: These flanges serve aircraft aerospace uses such as exhaust systems, combustion chambers and afterburner components, where resistance to high temperatures is essential
Power generation: Stainless steel 309H flanges find use in power plants for applications like boiler tubes, super heaters, and steam turbines, where they endure high temperatures and pressures
Heat Treatment: Stainless steel 309H flanges are applied in heat treatment furnaces, where they tolerate high temperatures and heat cycles without sacrificing their mechanical properties.
Chemical applications: These flanges are well-suited for chemical uses such as reactors, heat exchangers and vessels where hot chemicals and high temperatures are involved
Heat Resistance: 309H stainless steel is engineered for use in high-temperature environments. Verify that the flanges offer adequate heat resistance for your operating conditions, taking into account their maximum temperatures and variations.
End connections: Indicate the kind of end connections your piping system needs (e.g., butt welded, socket welded, threaded). Ensure the flanges come with end connections that align with your piping components.
Size and Design: Choose flanges of the right size and thickness to suit your piping layout. Take into account nominal pipe size, flange type (e.g., weld neck, slip-on, blind), and flange facing (e.g., raised face, flat face).
Pressure Pressure: Factor in how much pressure your application demands. Flanges are typically rated according to their pressure class (e.g., Class 150, Class 300). Pick flanges whose pressure ratings meet or surpass your system’s maximum pressure conditions.
Corrosion Resistance: Identifies the corrosive conditions under which the flange will operate. Stainless steel 309H offers outstanding resistance to oxidation and sulfidation at elevated temperatures, making it well-suited for hot settings. Verify that the flanges deliver the corrosion resistance your application demands.
Email: sales@koasteel.nz
