Issues welding A286 CRES to 430 CRES
Issues welding A286 CRES to 430 CRES
(OP)
What are the issues that need to be considered when welding A286 CRES to 430 CRES? We are looking at TIG welding with PWHT to improve ductility of the 430 CRES. Filler likely to be E309.





RE: Issues welding A286 CRES to 430 CRES
RE: Issues welding A286 CRES to 430 CRES
RE: Issues welding A286 CRES to 430 CRES
kevlar-- What is the HT condition of the A286? A286 is almost always used in the precipitation hardened and aged condition, and welding will most certainly alter this condition. Are you sure that this is technically feasible, meaning stresses in the weld joint?
RE: Issues welding A286 CRES to 430 CRES
What is the heat treat condition of the 430 and the C?
What is the heat treat condition of the A286?
For a good weld you really need both of them annealed, but then you don't have strength in your A286.
Using a Ni based filler will get you closer in thermal expansion, 309 is asking for trouble with these alloys.
There are a number of fillers that would work. NiCrFe-6 is common.
= = = = = = = = = = = = = = = = = = = =
Plymouth Tube
RE: Issues welding A286 CRES to 430 CRES