GB/T 7216-2009
AbolishedMetallographic test for gray cast iron
灰铸铁金相检验
Application Summary AI generated
This standard specifies the metallographic testing methods for gray cast iron, including the classification and evaluation of graphite morphology, matrix structure, and eutectic cell size. It is applied in the quality control and material analysis of gray cast iron components used in industries such as automotive, machinery, and heavy equipment manufacturing. The standard ensures consistent microstructural assessment for product acceptance and failure analysis in foundries and testing laboratories.
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