Duplex Steel UNS S31803 Washers are composed of a variety of elements, primarily iron, chromium and nickel. Chromium creates a protective layer to protect against oxidation and corrosion in harsh environments, while nickel increases the strength of the alloy. Manganese is added to deoxidize the steel and create tougher components that can withstand high pressure, while other trace elements, such as molybdenum, provide additional corrosion resistance. This combination results in an alloy with superb strength and excellent corrosion resistance, making it ideal for fasteners that must withstand extreme environmental conditions.
Duplex Steel UNS S31803 Washer is renowned for its exceptional mechanical and corrosion resistance properties, making it a highly sought-after material for use in several industrial applications. Its combination of strength, toughness, and hardness makes it suitable for a wide range of bolts and pressure vessels, pipes, pumps, valves, flanges and components exposed to seawater and other aggressive components atmospheres. This steel washer is also used in the production of oil rigs, ships and jack-ups thanks to its low thermal expansion characteristics. These washers offer improved weldability when compared to other steels of similar hardnesses. A thoughtful selection of alloying elements gives this grade an exact balance between the corrosion lightness and tensile strength it provides.
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