- Mar 13, 2008
- Upper midwest in a house
Maule aircraft use MIG welding now exclusively and they don't stress relieve anything. The process is FAA approved.I feel like TFF did a good job of answering your question. I HAVE heard (from a race car fabricator) though that TIG/MIG stress relieves on 4130 a lot cooler than cherry red. 250F was mentioned. And many do NOT bother, and seem to get along OK.