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 Sumakhsteel, we take pride in being the largest supplier and manufacturer in the USA, delivering advanced solutions for all your piping requirements. With cutting-edge manufacturing facilities strategically situated in the USA, we maintain an extensive stock of more than 25,000 tons of top-quality materials readily on hand.
Reach out to us for a fast quote tailored to your requirement.
We supply these Stainless Steel 309H Flanges in accordance with DIN, ISO, JIS or ANSI Standard.
High-Temperature Resistance: Stainless steel 309H is engineered specifically 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 settings where intense heat is present.
Easy to manufacture: Stainless steel 309H welds and fabricates readily, making it simple to produce and form according to particular system needs. This renders it a flexible material for flange design and a range of functions.
Strength and durability: Stainless steel 309H shows outstanding strength and toughness even under elevated 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 at high temperatures. This characteristic helps stop scale from forming and preserves the material’s integrity in high-temperature oxidizing conditions.
Corrosion Resistance: Stainless steel 309H holds high amounts of chromium and nickel, offering excellent corrosion resistance across many corrosive environments, including acidic and alkaline solutions. This makes it appropriate for use in medicine, marine settings and other corrosives.
Stainless Steel 309H Flanges possess outstanding mechanical properties and can withstand wear, corrosion, and elevated temperatures, making them common across numerous industries. These flanges see broad use in the oil and gas, petrochemical, power generation, and aerospace sectors. They serve a key role in connecting equipment, valves, and pipe systems. Thanks to their remarkable strength, toughness, and resistance to wear, they are ideally suited for applications subjected to demanding operating conditions, including high temperatures, high pressures, and corrosive environments.
Petrochemical Industry: Stainless steel 309H flanges serve refineries and petrochemical plants that face elevated temperatures and corrosive conditions. They deliver outstanding protection against high-temperature oxidation and sulfidation.
Aerospace and Aircraft: Aircraft aerospace applications rely on these flanges for components like exhaust systems, combustion chambers and afterburner parts, where resistance to high temperatures is essential
Power generation: In power plants, stainless steel 309H flanges are applied in areas such as boiler tubes, super heaters, and steam turbines, where they endure high temperatures and pressures
Heat Treatment: Stainless steel 309H flanges find use in heat treatment furnaces, where they tolerate high temperatures and heat cycles without sacrificing their mechanical properties.
Chemical applications: These flanges work well for chemical applications like reactors, heat exchangers and vessels that involve hot chemicals and high temperatures
Heat Resistance: 309H stainless steel is engineered for use in high-temperature settings. Verify that the flanges offer adequate heat resistance for your operating conditions, taking into account their peak temperatures and variations.
End connections: Indicate the kind of end connections your piping system needs (e.g., butt welded, socket welded, threaded). Confirm that the flanges come with end connections that align with your piping components.
Size and Design: Choose flanges of the right size and thickness to fit 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 the level of 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: Defines the corrosive conditions the flange will operate in. Stainless steel 309H offers outstanding resistance to oxidation and sulfidation under high temperatures, making it well suited for hot settings. Ensure the flanges deliver the corrosion resistance your application calls for.
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Email: sales@sumakhsteel.com
