It's actually a ferritic grade. NIDI recommends no preheat for thin gauge. They recommend annealing at 1450F then slow cool to 1100F, than a rapid cool. Slow room temp cooling induces brittleness (i guess). Thanks for your response.
Weld seam cracks after roll forming a flange.
Process: Rolling a cylindrical tank with 14 ga 409SS sheet and
using SAW for the butt weld seam. Filler is ER309LSI and flux is
ST-100. After the seam weld, a .4" deep flange (rough...
Weld seam cracks after roll forming a flange.
Process: Rolling a cylindrical tank with 14 ga 409SS sheet and
using SAW for the butt weld seam. Filler is ER309LSI and flux is
ST-100. After the seam weld, a .4" deep flange (rough...
Weld seam cracks after roll forming a flange.
Process: Rolling a cylindrical tank with 14 ga 409SS sheet and
using SAW for the butt weld seam. Filler is ER309LSI and flux is
ST-100. After the seam weld, a .4" deep flange (rough...
Weld seam cracks after roll forming a flange.
Process: Rolling a cylindrical tank with 14 ga 409SS sheet and using SAW for the butt weld seam. Filler is ER309LSI and flux is ST-100. After the seam weld, a .4" deep flange (rough cross section below) is roll formed on the top edge of the...