When can SMAW be subtituted by GTAW?

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Are there any circumstances where tig could be used in place of stick? I mean in a code compliance and/or passing inspection kind of way, not whether it will work or not.Ian TannerKawasaki KX450 and many other fine tools
Reply:Only time I will use tig instead of stick is if the material is too thin to stick weld. Stick lays down metal faster and cheaper than tig. Tig is so controlable.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:I'm familiar with the processes. What need help with is the code issues. I've searched in my lincoln book and aws d1.1 and I can not find info regarding replacing stick with tig. I know it must be fairly uncommon because tig is slower and more expensive. But, I've got a job where cleanliness will be very important, and can't have smoke and slag.Ian TannerKawasaki KX450 and many other fine tools
Reply:Originally Posted by fortyonethirtyI'm familiar with the processes. What need help with is the code issues. I've searched in my lincoln book and aws d1.1 and I can not find info regarding replacing stick with tig. I know it must be fairly uncommon because tig is slower and more expensive. But, I've got a job where cleanliness will be very important, and can't have smoke and slag.
Reply:There are no procedures that you can simply "swap GTAW for SMAW."  However, you would likely be able to find pre-qualified procedures for both processes from D1.1 that cover the same type and thickness material.  What exactly are you trying to do, and why are you trying to do it?Have we all gone mad?
Reply:Originally Posted by sn0border88you would likely be able to find pre-qualified procedures for both processes from D1.1 that cover the same type and thickness material.
Reply:OK, if the print says to be welded by E70XX or whatnot you can use whatever process your heart desires . Go with what us specified and you will be ok.Disclaimer; "I am just an a$$hole welder, don't take it personally ."
Reply:depending on what your welding weather it be a pressure joint and or structural member? and almost everything is engineered these days. Having said that there will likely be a procedure you must follow. That procedure is your instruction sheet on how to specifically weld the joint(s) You are not allowed to waiver from that procedure at all or its on you if it fails. There are different heat inputs and recations to metals when tig or stick welding. Thats one reason why the specify what process needs to be used. I would find out what the procedure entails and inquire with your engineer to discuss tolerences
Reply:Originally Posted by fortyonethirtyBut, I've got a job where cleanliness will be very important, and can't have smoke and slag.