scope:

This International Standard defines the grades and the corresponding requirements for spheroidal graphite cast irons.

This International Standard specifies a classification based on mechanical properties measured on machined test pieces prepared either from:

- separately cast samples;

- cast-on samples;

- samples cut from a casting.

This International standard also specifies a classification as a function of hardness.

This International Standard does not apply to spheroidal graphite cast iron used for pipes, fittings and accessories which are specified in accordance with ISO 2531 and ISO 7186. It does not apply to highly alloyed (austenitic) spheroidal cast irons which are specified in accordance with ISO 2892. This International Standard does not apply to ausferritic cast irons which are specified in accordance with ISO 17804.