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I am not familiar with 17-4 PH bi-metallic applications. Could someone tell me what the best filler metal would be?

Looking for the reference materials on general heat treatment techniques and basic parameters for metals. This is to help educate someone without and engineering background. Any suggestions?

I was wondering if there are any stress relief or other heat treat requirements for hastalloy piping after welding. This is a new material for me. The piping is for chemical service essentially non-corrosive at moderate temperatures.

What is the best filler metal for GTAW welding of Alloy 20 stainless steel pipe?

I am trying to find a list of alternative materials approved for use in the construction of US Naval AFFF system fire fighting tanks. The drawing I currently have lists CuNi 90/10 for the entire tank.

I have been tasked to write a welding procedure for 904L CRES. I have no experience with this grade. Does anyone know a Milspec or ASTM that this grade is manufactured to? My particular questions are welding parameters such as, preheat, filler, PWHT requirements.

Can anyone give me a possible supplier for inert atmosphere welding glovebags and trailing gas shields used for open atmosphere welding of titanium?

While most welded pipe joint designs have a requirement for backout at fit-up, I need to know if it is required to maintain that requirement after weld completion and where this is written.