GB/T 7216-1987
AbolishedGray cast iron metallography
灰铸铁金相
Application Summary AI generated
This standard specifies the metallographic examination methods for gray cast iron, including the classification and evaluation of graphite morphology, matrix structure, and carbide content. It is applied in the quality control and material analysis of gray cast iron castings used in industries such as automotive, machinery, and heavy equipment manufacturing. The standard is primarily used by foundries and testing laboratories to ensure consistent mechanical properties and performance through microstructural assessment.
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