Rationale

Nickel and Nickel alloy specifications are inconsistent in allowing for retests. General specification B906 Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip as well as product specifications B166, B335, B574, B662 and B691 allow for retests of two additional specimens if a single specimen fails. This ballot item is to add retests to this specification for chemical and mechanical tests to be consistent with other Nickel alloy specifications and to prevent a single poor test sample from causing rejection of an entire lot. Test methods (such as E8/E8M, E18, E1473) are silent or defer to the material or product specifications to allow for retests.