scope:

The scope of this specification is to clearly communicate the GM Materials Engineering requirements to the supplier during the quotation process. Each Statement of Requirement (SOR) for a part, component or subsystem will reference specifications to ensure that the quotation is based on materials that are suitable for the application. Specifications can include materials specifications and/or performance specifications.

Two appendices are required in the SOR package which contain the Materials Engineering Requirements:

• Appendix F9: Use GMW14270 (this document), Materials Engineering Requirements, which lists standard requirements and standard call-outs.

• Appendix F10: Materials Engineering Requirements which lists program specific requirements for a given part or component.

Note: GM Powertrain does not use the same SOR process that other GM Engineering Centers do. They do not require that an Appendix F10 document be issued. Instead materials requirements are incorporated with the Product Engineering requirements in Appendix C. Other regions, however have non-Powertrain employees specifying materials for Powertrain parts. Engineers releasing new Powertrain parts for new designs must contact a General Motors Powertrain (GMPT) Materials Engineer to determine the preferred materials.

Both SOR Appendix F9 and SOR Appendix F10 shall be referenced/included in the SOR package.

Note: In the case of specification conflicts within the SOR, Appendices F9 and F10 shall be regarded as the authoritative source for materials selection and part performance. If questions arise regarding discrepancies between appendices, contact the GM Materials Engineer for the relevant part. A listing of all Materials Engineering Global Subsystem Leadership Teams (GSSLT) with instructions on locating lead and regional materials engineers is given in Appendix A.