Duplex | UNS S31803 | ASTM/ASME A240 / F51 |1.4462
High corrosion resistance, especially against stress corrosion cracking in solutions containing chloride. Good strength properties.
Resistant to intergranular corrosion in the temperature range up to 300¡ãC.
Heat treatment subsequent to welding not necessary.
Surface condition for optimum corrosion resistance: pickled, heat treated free from scale or machined. Components in the chemical industry, e.g. separator and heat exchanger parts, from the paper industry, oil and gas production, compressor parts, seawater desalination plants.
Forging: 1200 to 950¡ãC / Air cooling
Solution annealing: 1020 to 1100¡ãC Water, air (thickness below 2mm)
