Super Duplex Steel ASTM A182 Grade F55 Flanges are high-performance forged components widely used in demanding industrial systems where strength, corrosion resistance, and long service life are essential. These flanges are designed to connect pipes, valves, pumps, and pressure equipment in industries such as offshore oil and gas, petrochemical processing, marine engineering, and power generation. Their unique metallurgical structure provides superior mechanical strength and excellent resistance to harsh environments including chloride-rich seawater, aggressive chemicals, and high-pressure process conditions.
Steel Icon Stainless Pvt. Ltd. manufactures precision-engineered Super Duplex Steel ASTM A182 Grade F55 Flanges for critical industrial infrastructure and mechanical engineering projects. These flanges are developed to maintain structural integrity even under extreme mechanical stress, fluctuating temperatures, and corrosive operating conditions. As a result, they play a crucial role in modern pipeline systems, structural fabrication projects, and heavy industrial equipment installations where reliability and safety are essential.
Super Duplex Steel ASTM A182 Grade F55 Flanges are forged flanges produced from super duplex stainless steel alloys characterized by a balanced microstructure of approximately equal amounts of austenite and ferrite. This dual-phase structure gives the material exceptional mechanical properties including high yield strength, improved fatigue resistance, and outstanding corrosion resistance compared with conventional stainless steels.
The chemical composition typically includes chromium, molybdenum, nickel, and nitrogen, which together enhance resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking. Chromium increases corrosion resistance, molybdenum improves pitting resistance in chloride environments, while nitrogen strengthens the alloy and stabilizes the austenitic phase. These metallurgical characteristics make ASTM A182 F55 flanges ideal for high-pressure piping systems, offshore platforms, desalination plants, and chemical processing equipment.
Because they are produced through precision forging processes, these flanges maintain superior grain structure and mechanical consistency. Their performance is particularly valuable in applications involving aggressive media, high load conditions, and complex fabrication assemblies.
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Super Duplex Steel ASTM A182 Grade F55 Flanges offer a combination of strength, durability, and corrosion resistance that is difficult to achieve with conventional stainless steel grades. Their yield strength is nearly twice that of standard austenitic stainless steels, which allows engineers to design lighter yet stronger piping systems while maintaining structural reliability.
Another significant advantage is their exceptional resistance to chloride-induced corrosion and stress corrosion cracking. This property makes them highly suitable for offshore oil and gas facilities, seawater piping networks, and chemical processing plants where aggressive environments are common. The alloy’s high resistance to pitting corrosion ensures longer service life even in saline environments.
Durability is another key benefit. Super Duplex F55 flanges maintain mechanical stability in high pressure and high temperature systems, reducing the risk of component failure and unplanned maintenance shutdowns. Their machinability and weldability also support efficient fabrication during pipeline construction and industrial equipment manufacturing.
From an economic perspective, these flanges provide long-term cost efficiency. Their extended lifespan reduces replacement frequency, maintenance costs, and operational downtime in heavy industrial environments such as power plants, refineries, and offshore drilling facilities.
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In large pipeline infrastructure projects, Super Duplex Steel ASTM A182 Grade F55 Flanges Manufacturers play a critical role in supplying components capable of withstanding high internal pressure and corrosive process fluids. These flanges are frequently installed in offshore oil platforms, subsea pipelines, and marine processing systems where exposure to seawater and chloride environments demands superior corrosion resistance and structural reliability.
In global supply chains supporting petrochemical plants and refinery installations, Super Duplex Steel ASTM A182 Grade F55 Flanges Suppliers provide engineered solutions for piping assemblies that transport aggressive chemicals, hydrocarbons, and high-temperature fluids. Their strength and corrosion resistance ensure consistent performance in pressure vessels, heat exchangers, and complex fluid transfer networks.
Industrial storage facilities and fabrication workshops rely on Super Duplex Steel ASTM A182 Grade F55 Flanges Stockists to maintain readily available inventory for construction projects, maintenance shutdowns, and urgent replacement requirements. Maintaining a stable stock of ASTM A182 F55 flanges helps engineering teams quickly support fabrication of pipes, tubes, plates, and structural assemblies used in chemical processing plants and power generation systems.
For international energy projects and marine infrastructure development, Super Duplex Steel ASTM A182 Grade F55 Flanges Exporters play an essential role in delivering certified components to global markets. These flanges are widely exported for use in desalination plants, offshore drilling rigs, LNG terminals, and shipbuilding projects where international quality standards and corrosion resistance are mandatory.
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Super Duplex Steel ASTM A182 Grade F55 Flanges are produced in accordance with ASTM A182 specifications, which define the requirements for forged or rolled alloy and stainless steel pipe flanges, fittings, valves, and parts intended for high-temperature service. The ASTM A182 F55 grade corresponds with UNS S32760, a super duplex stainless steel known for its excellent mechanical strength and corrosion resistance. These flanges are commonly used alongside ASME B16.5 and ASME B16.47 dimensional standards that define flange sizes, pressure classes, and tolerances for industrial piping systems. Compliance with these international standards ensures compatibility with pressure vessels, pipeline assemblies, and critical mechanical engineering equipment.
Steel products used in industrial fabrication are classified under globally recognized standards that help engineers identify material composition, mechanical properties, and intended applications. Standards such as ASTM and ASME are widely used in North America and global engineering projects, while EN and DIN standards are common across Europe. JIS standards are widely adopted in Japan and parts of Asia, while ISO standards provide international alignment for industrial materials and manufacturing.
Under these systems, steel products such as bars, pipes, tubes, plates, sheets, and coils are named according to their chemical composition, mechanical performance, and manufacturing process. For example, stainless steel pipes may be designated under ASTM A312, while plates may follow ASTM A240 specifications. These naming conventions ensure that materials used in pressure equipment, structural engineering, petrochemical facilities, and power plants meet precise technical requirements and maintain consistent quality across global supply chains.
Steel Icon Stainless Pvt. Ltd. is one of the leading manufacturers & suppliers of ASME B16.5 Sa182 F55 Uns S32760 Material according to intenational standard, Check ASTM A182 F55 Flange Specification, ASTM A182 F55 Duplex S32760 Flange suppliers, View dimensions and updated price list of ASTM A182 Gr F55 Casting at the best price in India
Request Latest Price & Stock Availability| Specification | ASTM A182 / ASME SA182 F55 |
|---|---|
| UNS Grade | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | ½” to 24″ |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N | W |
|---|---|---|---|---|---|---|---|---|---|---|
| Super Duplex F55 | 0.03 max | 1.00 max | 0.03 max | 0.01 max | 1 max | 24-26 | 4.5-6.5 | 3-4 | 0.25 | 0.08-0.20 |
| Alloy | Tensile Strength N/mm² | Yield Strength 0.2% N/mm² | Elongation | Hardness HB |
|---|---|---|---|---|
| Super Duplex F55 | 860 | 720 min | 16 min | 270 max |
