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Welding Carbon Steel To Super Duplex. The 300 series stainless steels are generally welded to duplex steels with a 309MoL 23Cr13Ni25Mo filler metal. Austenitic SS the 3XX series are typically used in applications requiring good weldability.
Ad No Min Order. 21 Welding metallurgy Duplex stainless steels have a microstructure consisting of 50 ferrite α and 50 austenite γ. This is further accelerated if chlorides are present.
Shielding gas plays an important role in welding of duplex stainless steels.
Avestas 2507P100 range of highly alloyed super duplex consumables provides better. Except that flux cored arc welding FCAW is not recommended especially for the super duplex grades. Ad No Min Order. The 50 50 microstructure is achieved at room temperature after water quenching from the solution annealing.