darek_u

My headers #2 & 3 are cracked at the flanges - pretty standard failure after 25+ years of use. I know that I have to use Inconel 82 to TIG weld these from outside. The problem is that this material is super difficult to get here. I contacted one of the largest welding material suppliers in PL and they advised that Inconel 82 is not available but they can sell me an equivalent - pretty much the same metal composition made by Lincoln. The problem is that I have to buy 5 kg instead of 5 rods and the price is insane $500!
Does anybody have excess of Inconel 82 TIG rods and wants to send few in bubbled envelope or small package? Just asking...

Bmuldoon

Maybe these guys can help you out. They were resourceful when I was exploring an all Iconel exhaust setup.

http://pacificalloys.com/Inconel.html

darek_u

These guys sell only pipes and sheet metal.

steven74

I asked my brother in law who is a welder and e said incknel should be pretty common for oil and gas especially in subset applications. I asked him about welding a t3 flange on the pipe and he said for a non structural part it should weld quite similarly to stainless. Sorry I can't help with the rod.

PaulD_944S2

PM sent!

Tedro951

From what I was told by two different aviation exhaust repair shops, the filler material won't matter much. Neither was interested in attempting a repair, due to the age/life of the header material. Apparently the metallurgy of the worn out inconel isn't likely to result in a successful repair.

darek_u

But people reported successful repairs? I believe a lot of listers repaired their headers and call it a success.

V2Rocket

contact these folks...aviation specialty welding supply.
i used to buy from them all the time when i worked in the aviation maintenance industry. good people, decent pricing.
http://www.lawires.com/catalogue/Nickel%20Alloys.html

16v951

I repaired them with standard nickel filler then wrapped them with titanium-fiberglass header wrap. About 5 years and counting, including multiple tracks days.

GPA951s

I welded mine years ago with standard 308 SS Filler rod.. Never had an issue..

darek_u

I purchased Thermanit 625 filler rod - apparently it has 65% Nickel content and is a good substitute for Inconel 82.

GPA951s

purge to inside with argon when you do this, the weld will be as nice on the inside as on the outside, No Burning or stalactites...

951and944S

You can just tap a regular nickel welding rod lightly with a small hammer to get the flux off and use as a tig filler.

Not sure nickel holds up to heat that the manifold could see though.

T

darek_u

I got it welded by a qualified welder, it looks nice although I don't have a photo to show it here.

Jay Wellwood

What are you waiting for? Post a pic!