Welding XM19
Welding XM19
(OP)
Hi,
I’m looking at welding a 1.5" d barstock of nitronic 50. The material is Austenetic 209 SS. I’ve decided on a welding rod of 309L SS. From doing a carbon equivalency calculation it looks like this material should be preheated between 400 and 700F (calc from ASM #6 welding book). Post heat is going to be wrapped in blankets to cool slowly. My one concern is the possibility of sensitization (C = 0.06% in XM19) through the 850-450 range. Thoughts suggestions. The part cannot be put into a furnace as the length of the barstock in the end will exceed the furnace size. I suppose we could torch the part as well for a post heat, just like the pre heat. I’m thinking of keeping the part at the low end of the pre heat (400F) as I have also read the preheating stainless can cause more problems.
I’m looking at welding a 1.5" d barstock of nitronic 50. The material is Austenetic 209 SS. I’ve decided on a welding rod of 309L SS. From doing a carbon equivalency calculation it looks like this material should be preheated between 400 and 700F (calc from ASM #6 welding book). Post heat is going to be wrapped in blankets to cool slowly. My one concern is the possibility of sensitization (C = 0.06% in XM19) through the 850-450 range. Thoughts suggestions. The part cannot be put into a furnace as the length of the barstock in the end will exceed the furnace size. I suppose we could torch the part as well for a post heat, just like the pre heat. I’m thinking of keeping the part at the low end of the pre heat (400F) as I have also read the preheating stainless can cause more problems.





RE: Welding XM19
What are you welding to? (the bar to itself?) Why not the ER209 filler?
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
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RE: Welding XM19
this part has a CE of 8.5 and from what i read in the ASM book it suggested a pre heat.
i turned the bar in half and beveled the edges for R & D purposes and cost. That was my thought as well for filler, however i dont think the supplier stocks it.
RE: Welding XM19
Make sure you don't have Nitronic 50HS.
I welded this material with AWS ER209 numerous times with no problems.
Here is some welding information from HP
http://www.hpalloy.com/ni504.htm
RE: Welding XM19
= = = = = = = = = = = = = = = = = = = =
Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net