The American Dental Association (ADA) Specification No. 5 for Dental Casting Gold Alloys specifies :
High-Yield Explanation
The American Dental Association (ADA) Specification No.5 for Dental Casting Gold Alloys requires a minimum total gold-plus-platinum-metals content of 75 weight percent (wt%).
Sturdevant operative dentistry 7th Edition, Page No:e94