I am currently applying stellite 6 onto cast monel 400 (ASTM A494-M35-1) using PTA and normally use an Inconel 625 buttering layer. The prequlualified procedure has worked well in the past however, current production tests are showing intergranular cracking in the Monel / Inconel HAZ, but only after application of the Stellite.
Any comments much appreciated.
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