Seldom
It makes me dizzy at times but dosent QW-403.5 state that it does qualify? I know QW-424 Says P-5A to Any selection in the P-4,3 & 1. but back to QW-403.5 Dosent it elaborate on that?
I didnt mean that we used 309 for corrosion and erosion specificaly. Its paractice long established I suppose for in the field repairs to avoid the need for PWHT. I have a bad habit of useing those two words together, there should not (idealy) be any need for corrosion protection in this application. But they to get alot worm holes at times.
As for avoiding PWHT, sometimes when you are dealing with a finished machined part it is tuff to keep things from moveing around.
I am grateful for all the response for I know I am in over my head but at the moment I'm all we've got. And to make my point I have to ask,What is an AI?
I have a good idea but I need to know for sure.