Duplex steel DIN1 4462 fasteners are composed of a unique blend of chemical elements. This blend includes 2–3% molybdenum, 0.2–0.3% nitrogen and up to 21-23% chromium. Additionally, these fasteners contain between 1-4% nickel and 4-6% manganese and less than 0.03 sulfur and 0.02 phosphorus components. These various elements in the mix offer superior qualities such as excellent durability and outstanding corrosion resistance. This combination makes these fasteners ideal for a wide range of applications where harsh environments are expected or unavoidable.

Duplex Steel DIN 1 4462 Fasteners offer an array of advantages for a variety of applications. Their versatile properties make them attractive to chemical engineering, oil and gas production, construction, aerospace, and marine engineering industries. Compared to other steels, they exhibit a high mechanical strength, excellent uniform corrosion resistance in both reducing and oxidizing acids, good weldability and machinability, higher resistance to stress corrosion cracking at elevated temperatures and pressures, improved erosion corrosion performance when compared to other kinds of stainless steel fasteners, and a lower coefficient of thermal expansion which helps prevent leakages in pipe fixtures. Some of the most common applications involving Duplex steel DIN1 4462 fasteners include offshore equipment used in uncongenial conditions, especially seawater; pressure vessels; construction works on ships; petrochemical substrate holding systems; desalinization projects; and areas that could be prone to significantly changing temperatures.