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Can you weld stainless steel and inconel together?

thread725-1417

Can you weld stainless steel and inconel together?

Can you weld stainless steel and inconel together?

(OP)
I need to know if these two metal present any problems when welded together. Also, where can I go to find out about what types of welds are better for different metals.

RE: Can you weld stainless steel and inconel together?

Yes they can be welded.  Take a look at a book published by Lincoln Electric titled "Metals and How to Weld Them".  It's a pretty good basic reference.

Tom W

RE: Can you weld stainless steel and inconel together?

The short answer is yes...but like most engineering answers, the proper answer is "it depends".  If the Inconel you are referring to is a solid-solution strengthened alloy (e.g. 600, 625) welding to an austenitic stainless steel like 304 is quite easy.  If the Inconel is a precipitation-hardenable alloy (e.g. 702, 750, etc.) however, the process becomes much more involved, requiring preheating and a postweld heat treatment to avoid strain age cracking.  The ASM Handbook, Vol. 6 "Welding, Brazing and Soldering" comes to mind as a good starting reference.

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