CGI Standards

Various national and international organisations have developed and published standards for Compacted Graphite Iron. These standards specify the CGI grades in terms of the tensile strength and the graphite microstructure, expressed as Percent Nodularity. The currently available standards are summarised as follows:

Summary of CGI Standards


Country Issuing Body Number Year
International ISO ISO 16112:2017 2017
International CEN EN 16079 2011
International SAE J 1887 2002
China JB GB/T 26655 2011
USA ASTM A 842 2011
Germany VDG W 50 2002
Japan JIS G 5505 2013
Romania STAS 12443-86 1986


Beyond the standards issued by national and international organisations, several OEMs have also established their own internal CGI standards.