Welding Inconel X750
Welding Inconel X750
(OP)
Does anyone have thoughts on TIG welding Inconel X750 to 316L stainless steel?
I want to weld a 3/4" "rod" of inconel to a "thick wall tube" of 316 (3/4" id). The parts would be slid together so the ends are even and the welded at the interface of the two parts. No filler metal.
Inconel would be in the precipitation hardened condition, 316 in annealed condition. Service temperature is -45 to +200F.
Is this a no problem weld or does it require special setup?
Thanks for any advice you can provide.
I want to weld a 3/4" "rod" of inconel to a "thick wall tube" of 316 (3/4" id). The parts would be slid together so the ends are even and the welded at the interface of the two parts. No filler metal.
Inconel would be in the precipitation hardened condition, 316 in annealed condition. Service temperature is -45 to +200F.
Is this a no problem weld or does it require special setup?
Thanks for any advice you can provide.





RE: Welding Inconel X750
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RE: Welding Inconel X750
I have seen this sheet. It seems to imply that you can weld "normally" in the hardened condition if you don't expose it to higher temperatures afterwards.
Would it be right to assume that the advice applies only welding to X750 and similar alloys or would it apply in general to other readily weldable metals like 316?
Maybe I'm just being a little cautious given the expense of X750.
RE: Welding Inconel X750
I would strongly suggest you develop a welding procedure specification by using a mock-up. Have the coupon tested to evaluate the tensile and bend properties of the autogenous weld.
RE: Welding Inconel X750
RE: Welding Inconel X750
RE: Welding Inconel X750
No filler rod is just the standard process here. The weld has very significant impact on product performance. This process or EBwelding seems to work best throught our industry.
RE: Welding Inconel X750