This International Standard gives the classification of, and specifies requirements and test methods for, dental casting alloys with a noble metal content of 25 % up to but not in-cluding 75 %.
It applies to casting alloys intended for making dental resto-rations and appliances. It does not apply to alloys intended for use as the substructure of a ceramic-to-metaf restoration.
For dental casting alloys with a noble metal content of 75 % and above, see ISO 1562".