DIN 2544 Super Duplex Flanges are flanges manufactured according to the DIN 2544 standard in Germany. These flanges are designed for use with super duplex stainless steel, a higher alloyed version of duplex stainless steel that combines the properties of ferritic and austenitic steels. Super duplex steel provides excellent strength, exceptional resistance to corrosion, particularly in aggressive environments, and is ideal for industries like chemical, oil and gas, petrochemical, and marine. Key Features: Material: Super duplex stainless steel (typically Grade 2507). Pressure Rating (PN 25): These flanges are rated for pressure class PN 25, designed to handle a pressure of 25 bar (2500 kPa). Corrosion Resistance: Super duplex steel offers superior resistance to pitting, crevice, and stress corrosion cracking, especially in chloride-rich environments. Strength: It has higher tensile strength and resistance to corrosion compared to standard duplex or austenitic stainless steels. Types of DIN 2544 Super Duplex Flanges: Weld Neck Flange (WN): Commonly used for high-pressure applications where strength and a leak-proof seal are critical. Slip-On Flange (SO): Easier to install, sliding over the pipe and welded both inside and outside. Blind Flange (BL): Used to close the ends of a pipeline or vessel. Threaded Flange (TH): Screwed onto the pipe without welding, allowing for easy removal. Socket Weld Flange (SW): For smaller pipe sizes, where the pipe is inserted into the socket and welded in place. Grades of Super Duplex Stainless Steel: Grade 2507 (Super Duplex): This grade provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. It also offers high strength and good weldability. Chemical Composition of Grade 2507: Carbon (C): ≤ 0.03% Chromium (Cr): 24.0% - 26.0% Nickel (Ni): 6.0% - 8.0% Molybdenum (Mo): 3.0% - 5.0% Manganese (Mn): ≤ 1.2% Silicon (Si): ≤ 1.0% Phosphorus (P): ≤ 0.03% Sulfur (S): ≤ 0.02% Nitrogen (N): 0.20% - 0.30% Iron (Fe): Balance Pressure Rating (PN 25): PN 25 indicates the flange can withstand pressures up to 25 bar (or 2500 kPa). This rating is ideal for systems where moderate to high pressures are involved. Summary: DIN 2544 super duplex flanges are robust, corrosion-resistant components made from super duplex stainless steel, typically used in high-pressure, high-strength, and corrosive environments. They come in various types, including weld neck, slip-on, blind, threaded, and socket weld. The most common material is Grade 2507 super duplex stainless steel, known for its high strength and excellent corrosion resistance. PN 25 flanges are rated for pressures up to 25 bar. #flanges #din2544flanges #din2544superduplexflanges #superduplexflanges
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