Stetson,

Welcome to the forum!

Waspaloy is a precipitation hardening, nickel-based alloy that is most commonly used in turban engine and high temperature applications.

This is a sensitive alloy and probably should only be welded after procedures and welders have been qualified by testing according to what ever governing code applies.

Welding (either repair of fabrication) should not be attempted unless the fabricator is fully equipped for thermal treatment, surface prep and fixturing.

Do not view the following as enough data to weld Waspaloy parts.
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Being a precipitation hardening alloy (similar in some ways to Inco 718) Waspaloy must be welded in the Annealed condition.

Highest level surface cleaning preparation are required, chemical descaling, cleaning solvents, vapor blasting (not sand blasting), and emery cleaning are most commonly recommended.

Post weld heat treatment is also requred. All welded parts should be re-solution treated. "Strain-age" cracking can be minimized by heating welded parts through the aging temperature as rapidly as possible.  See ASM Metals handbook Vol 6.

Thats the bad news.

The good news is that the actual manual welding is not all that different from Inconel 718...  The puddle tends to feel a bit sluggish (low thermal condictivity) and the typical super alloy smut can be common on repair welds on high temp parts even after thorough surface prep.

All my experience with Waspelloy is with GTAW manual and semi-automatic and micro plasma... maybe others will have something to add about resistance joining.