Duplex Steel Sheet

Duplex steel sheets are flat, thin metal plate products manufactured from duplex stainless steel, a material type consisting of a combination of austenitic and ferritic stainless steel. Due to their improved characteristics, they are suitable for use in structures and components of constructions exposed to unfavorable environmental conditions, achieving durability, optimal performance and reliability in numerous industrial applications.

Characteristics of Duplex Steel Sheets

Duplex steel sheets are produced from a given category of austenitic and ferritic stainless steels, which have the following characteristics:

• High Strength: Duplex steel sheets have the best tensile and yield strengths compared to conventional stainless steel. This high strength enables slender and lightweight sections to be used with equal strength and durability to heavier sections, thus resulting in cost savings in material and construction.
• Excellent Corrosion Resistance: Chemical processing industries such as the petroleum industry, marine industries and other uses that expose the sheets to chloride environments are other areas where the application of the duplex steel sheets is admired due to their high corrosion resistance.
• Resistance to Stress Corrosion Cracking: Stress corrosion cracking is a main problem, especially for structures that are subjected to stress and corrosion, and thus, the high resistance of the duplex steel sheets in this aspect makes them suitable for use, especially in components that are exposed to both stress and a corrosive environment. It also increases the durability of structures and equipment, improving efficiency and effectiveness.
• Enhanced Fatigue Resistance: Duplex steel sheets are employed where cyclic loading and repeated stress are applied, and the product material's fatigue resistance is important. This characteristic makes it possible to avoid the early failure of the product in conditions of excessive stress.
• Cost-Effectiveness: athe use of duplex steel sheets is much more effective from the economic point of view, while, in many cases, it can even show higher efficiency. This cost-effectiveness is useful, especially when large-scale or high-demand projects are incurred.
• Improved Weldability: Duplex steel sheets can be welded following industry practices, and hence, they can be incorporated into different systems and subsystems with the assurance of strong welds which can withstand operational conditions.
• High Impact Toughness: Another remarkable feature of the material that determines its usage is Duplex steel sheets' relatively high impact-accommodating ability that prevents them from cracking in the presence of impulsive loads, vibrations, and shocks.
• Reduced Maintenance: Due to these characteristics, the maintenance costs are low, and the lifetime of the materials is higher. This leads to cutting operating expenses and increasing the reliability of important equipment and structures.

Therefore, using duplex steel sheets has many advantages, such as high tensile strength, high corrosion resistance, and resistance to stress corrosion cracking.

Uses Of Duplex Steel Sheet

Duplex steel sheets characterized by austenitic and ferritic stainless steel considerably meet the various industries' requirements.

• Chemical Processing: Duplex steel sheets are mainly used to produce equipment used in chemical processing plants, including reactors, heat exchangers , range tanks, etc. These materials possess enhanced corrosion resistance; thus, they can last longer and be safe when in contact with harsh chemicals and high temperatures.
• Marine Engineering: In the marine industry, these sheets are used to fabricate ship hulls, offshore platforms, and ballast systems. They suit harsh marine climates because they protect seawater's corrosive influence and biofouling.
• Oil and Gas Industry: Two and half decades back, even the most conservative American petroleum expert reportedly admitted that, for oil and gas related structures 'Du780' duplex steel sheets hold the sway. Corrosive materials and their management and high-pressure situations make use of the high strength and resistance to stress corrosion cracking dependable.
• Power Generation: Duplex steel sheets are applied where energy is produced, such as fossil fuel or nuclear energy production plants. They are used in refrigerators, steam lines and structural members where their thermal insulating properties and corrosion resistance are assets.
• Pulp and Paper Industry: Digesters and bleach plant equipment use duplex steel sheet materials. These properties, such as high temperature and chemical resistance, improve operating efficiency and equipment durability.
• Aerospace: Duplex steel sheets' application involves manufacturing parts that must be strong and withstand high-temperature conditions. They are used in aerospace structures and systems, so it is pertinent to see them perform well to guarantee safety and reliability.
• Automotive Industry: Duplex steel sheets manufacture appliances in automotive applications, including exhausts and turbo-charged mechanisms. These attributes play a major role in automotive applications, enhancing parts' performance and life cycle.
• Water Treatment: Most structures, such as pumps, valves and filtration systems in water treatment facilities, use duplex steel sheets. Because most of them are antimagnetic, they do not rust, while their handling of pressure guarantees efficient and reliable water treatment.

Hence, duplex steel sheets have numerous advantages, such as high tensile strength and corrosion resistance, and they can work well in extreme conditions.