Duplex and super duplex steel are two-phase Cr-Ni-Mo steel alloys used mainly in the production of tanks, pumps, and heat exchangers, as well as for laying offshore pipelines and gas pipelines. Duplex steels have excellent corrosion resistance and greater strength, allowing for the use of pipes with thinner walls than AISI 316 steel pipes, making them lighter, easier to install, and cheaper. This article aims to explore the characteristics of duplex and super duplex steel products, including flanges, pipe fittings, and pipes.
Duplex alloys retain the high strength properties of ferritic stainless steels and a relatively low coefficient of thermal expansion compared to austenitic acid-resistant metals. Are you searching for Super Duplex flanges? Ensure the reliability of your supplies by relying on professional suppliers who can provide high-quality products and services.
Chemical Composition and Interaction of Elements
Duplex steels have a reduced carbon content, with most alloys not exceeding 0.03%. This reduces the precipitation of chromium carbides, which deplete the chromium adjacent to the grain boundaries, thus degrading the resistance to intergranular corrosion. Nickel in duplex steels increases resistance to organic and inorganic acids and has a positive effect on the passivity of the steel. Manganese increases abrasion resistance, reduces ductility, and increases adhesive wear resistance. Do you want to buy Duplex flanges? Don't take any chances with the quality of your materials. Turn to professional suppliers to guarantee superior products and service.
Characteristics of Duplex and Super Duplex Alloys
Duplex and super duplex grades retain appropriate mechanical properties in the temperature range of 250 - 300 degrees. Impact strength at room temperature is similar to austenitic grades, but performance deteriorates evenly at temperatures below freezing. At temperatures above -50 degrees, duplex alloys become brittle. Duplex alloys exhibit excellent weldability even when using thick workpieces and resistance to fracture. They are resistant to wear, abrasion, and erosion. Are you searching for reliable sources for super duplex pipe fittings manufacturers? It's essential to rely on professional suppliers to ensure high-quality products and services.
Applications of Duplex Steel
Duplex steel is used extensively in the production of flanges, pipe fittings, and pipes. Flanges are components used to connect pipes and provide easy access for cleaning, inspection, or modification. Duplex Flanges exhibit exceptional resistance to corrosion, abrasion, and erosion. Pipe fittings are used to connect pipes and other components, such as valves and pumps, to create a complete piping system. Duplex steel pipe fittings are highly resistant to corrosion and have excellent strength and toughness. Duplex steel pipes are widely preferred in industries that demand exceptional resistance to corrosion and outstanding durability, as they exhibit exceptional strength and endurance compared to alternative materials. This makes them an ideal choice for applications in harsh environments such as those found in the oil and gas industry, chemical processing, and seawater applications.
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