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Procedures for Welding of Duplex and Super Duplex Material

Project Code: 22953

Industrial Need


An authoritative and independent investigation into the weldability of duplex stainless steels and their performance with respect to corrosion resistance and toughness.




Gather, compare and review recommendations and industry practices for arc welding of duplex stainless steels.


Perform a series of experimental trials to clearly define parameters for reliable and satisfactory welding of duplex stainless steels that will give acceptable corrosion resistance and free of micro crack-like flaws.


Investigate and report on the effectiveness of G48 testing as a method of assessing the corrosion performance of duplex stainless steel joints.


Establish a guide to weld discolouration (heat tint) levels on duplex stainless steel.


Project Outline


A review of recommendations and industry practices on duplex stainless steel welding.


Development of experimental plan and welders training.


Investigation of the root pass and joint geometry for welding of duplex stainless steels.


Visual, mechanical and corrosion tests.


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