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GMW7

5th Edition, March 1, 2016

Complete Document

Compacted Graphite Iron



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Product Details:

  • Revision: 5th Edition, March 1, 2016
  • Published Date: March 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: General Motors Worldwide (GMW)
  • Page Count: 7
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This material specification applies to grades of compacted graphite iron castings used in automotive and allied industries. Compacted graphite iron (CGI) is also known as vermicular graphite iron. This specification specifies mechanical properties from test bars machined from separately cast test samples. Mechanical properties may also be specified from test bars machined from specific control locations in product castings. Microstructure features shall only be evaluated at specific control locations in the product castings. Criteria for separately cast test samples and/or control locations for mechanical property and metallographic criteria shall be agreed to by the purchaser and supplier.

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.