Purpose. The intent of this specification is to create a common, global process for qualification of sheet steels that are used by GM worldwide.

Applicability. Requirements for qualification of uncoated and coated steels for specifications GMW2, GMW3032 or GMW3399 with exposed, semi-exposed, temper-rolled, and for unexposed surface quality from a specific processing line are defined in this procedure. Coating requirements for these specifications are detailed in GMW8, GMW11, and GMW16066. Suppliers must also be capable of meeting the requirements in GMW3224, Sheet Steel Thickness and Tolerances before approval will be granted.

Testing requirements are summarized in Appendix A, Tables A1 through A3. These tables define testing requirements for unapproved lines, as well as approved processing lines supplying previously unapproved base metals or higher strength grades, as well as new combinations of approved processing lines and approved base metals. New steel grades or coatings under development are not the scope of this specification.

Release of specific parts and applications are not within the scope of this specification.