Various welding methods are applicable in the same manner as with the standard austenitic stainless steels, including shielded metal arc welding, TIG welding, and plasma welding. Susceptibility of Inconel 625/UNS N06625/2.4856 Alloy/ASTM B443 to solidification cracking is higher than that of Type 304 and lower than that of Type 310S.
Welding of Inconel 625/UNS N06625/2.4856 Alloy/ASTM B443 can be accomplished by the gas-shielded processes using a tungsten electrode or a consumable electrode. Post weld heat treatment of the weld is not necessary to maintain corrosion resistance. Heavy restrained sections can be welded and the weld's mechanical properties follow the same trends as base metal properties. Standard practices such as clean surfaces, good joint alignment, U-joints for thicker sections, etc., should be followed.
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