This category is basically any part made from a rectangular section material that is used in such ways as fasteners, minor beams, supports, ornaments, etc. To maximize the life of the part it is important to keep the number of radii to a minimum and each radius as broad as possible. This is necessary because bends are where the highest stress concentrations occur and the most likely location for a break. The minimum bend radius varies from material to material but normally no less than 4 times the material thickness is recommended.
