Duplex Steel Coil

Duplex steel coils are made from a combination of ferritic and austenitic stainless steels and provide strength as well as superior corrosion protection. These steel coils are well appreciated for their tensile strength and resistance to stress corrosion cracking and, therefore, are used extensively in various industries. It enhances the pitting and crevice corrosion resistance of their microstructure to make them ideal for demanding conditions. 

Features of Duplex Steel Coil

Duplex steel coils have several notable features that make them highly valued in various industrial applications:

• High Strength: Duplex steel coils have higher tensile strength than the austenitic stainless steels, thus they perform well under high stress than the other steels. 
• Corrosion Resistance: They offer high resistance to pitting, crevice and stress corrosion cracking and thus are ideal for applications in corrosive environments such as chemical industry and marine. 
• Improved Toughness: Duplex steel has features of both the ferritic and the austenitic steels, and has a better impact strength and corrosion resistance. 
• Cost-Effective: The fact that they have a high strength to weight ratio, thinner gauges of the duplex steel coils may be used offering the same strength, may be at a lower cost. 
• Good Weldability: The duplex steels are easy to weld provided that the correct welding procedures are used, however, one has to be very cautious when applying heat input to the material to avoid problems such as high ferrite content. 
• Heat Resistance: Duplex steels have fairly good high temperature service characteristics but are not as high temperature resistant as super duplex or nickel based alloys. 
• Magnetic Properties: Compared to austenitic stainless steels, the duplex steels are magnetic and this could be a factor of consideration when choosing the steel type for use. 
• Low Thermal Expansion: Duplex steels possess a lower coefficient of thermal expansion, which is beneficial for dimensional stability when exposed to high temperatures. 

Duplex steel coils are a durable and diverse product for applications that need to deliver performance and durability. 

Applications of Duplex Steel Coil 

Duplex steel coils are used in many industries. Here are some common applications:

• Oil and Gas Industry: Applied in piping, pressure vessels, and heat exchangers due to their ability to resist chloride stress corrosion cracking and high strength. 
• Chemical Processing: Used in components like reactors, storage tanks, and pipelines, in which resistance to aggressive chemicals and high temperatures is important. 
• Marine Engineering: Used for parts such as ship constructions, offshore constructions and marine structures because of its high resistance to water corrosion. 
• Pulp and Paper Industry: Used in digesters, bleach plants and paper machines, where equipment has to withstand corrosive environments and has to be durable. 
• Desalination Plants: Applied in evaporators, condensers and other parts in seawater desalination stations because of their excellent performance in resisting seawater and brine. 
• Construction: Used for architectural and structural purposes such as in bridges and building façades where the material requires strength and the capability to withstand different environmental factors. 
• Water Treatment: Duplex steel coils are used in various parts of water treatment facilities, such as filters and pipes, due to their high endurance to corrosion and wear. 
• Power Generation: Applied in parts such as heat exchangers and cooling systems requiring high strength and corrosion resistance. 

 Duplex steel coils are a dependable and all-purpose product for industries that demand high performance and durability of materials.