It defines the grades and the corresponding requirements for ausferritic spheroidal graphite cast irons.
It specifies five grades of ausferritic spheroidal graphite cast iron by a classification based on mechanical properties measured on machined test pieces prepared from separately cast samples or cast-on samples, and samples cut from a casting.
It also specifies two grades by a classification as a function of hardness.
BS ISO 17804:2006 history
2020BS ISO 17804:2020 Founding. Ausferritic spheroidal graphite cast irons. Classification