General Motors Company

Material Engineering Requirements - Issue 4; English
 N GMW14270

Annotation

Introduction

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose. The purpose 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.

Additional input for appendices may be required in the SOR package which contain the Materials Engineering Requirements:

• Appendix F9: Use GMW14270, Material Engineering Requirements, which lists standard requirements and standard call-outs.

• Appendix B2: Material Engineering Requirements (from SOR) which lists program specific requirements for a given part or component.

Note 1: GM Global Propulsion System (GPS) does not use the same SOR process that other GM Engineering Centers do. They do not require an SOR Appendix B2 document be issued. Instead, materials requirements are incorporated with the Product Engineering requirements in SOR Appendix C. Other regions, have non-GPS employees specifying materials for GPS parts. Engineers releasing new GPS parts for new designs, must contact a General Motors GPS Materials Engineer to determine the preferred materials.

Note 2: SOR Appendix B2 information may be placed with Appendix B, Appendix S, or Appendix T, for certain SOR packages. Note 3: Both SOR Appendix F9 and SOR Appendix B2 may be referenced/included in the SOR package. Note 4: In the case of specification conflicts within the SOR, Appendices F9 and B2, Appendix B2 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.