I got a lot of experience welding alloys while working at a Celanese plant. They had more than any place I have worked. I welded pressure piping with Titanium, Zirconium, Hastelloy, Monel, Carpenter 20, 316 SS, 304 SS, 9%chrome, 5% chrome, 2 1/4 chrome and 1 1/4 chrome along with lots of...