I started working on some seat belt brackets this evening. This is .040 thick material. The bend allowance should be suitable for a .125 bend radius which is the minimum allowable for .040 thick material.

Unfortunately this .040 thick material is really hard to bend. I was supposed to bend this flange 110 degrees, but bent it a little too far. When I opened the angle back up, I got a crack along the inside of the bend. Dang...so far this isn't going well. Gonna stop and think a bit.