Application

Decarb annealing

For parts heat treated to less than 220ksi, the depth of partial decarburization after all heat treat operations, shall not exceed 0.13mm. The depth of decarburization shall be determined by making a micro hardness traverse.

For parts heat treated to 220ksi and above, the depth of decarburization after all heat treat operations shall not exceed 0.08mm inches on any surface.