BS EN ISO 8891:1995 Dental casting alloys with noble metal content of 25% up to but not including 75%
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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 including 75 %. ding
It applies to casting alloys intended for making dental restorations and appliances. It does not apply to alloys intended for use as the substructure of a ceramic-to- metal restoration.
For dental casting alloys with a noble metal content of 75% and above, see ISO 1562").