This standard specifies the method for the determination of copper content in gold, palladium and silver alloys. This standard is applicable to AuAgCu20-20, AuAgCu35-5, AuAgCu13-20, AuCuNiZn22-2.5-1, AuCuNiZn30-3-0.7, AuCuNiZnMn18-1.8-0.7-0.03, PdAgCu65-20, PdAgCu54-21, PdAgCu68-27, PdAgCu5 2- 28. Determination of copper content in PdAgCu58-32, PdAgCuAuPtZn3014-10-101, AgCu10, AgCu12.5, AgCuV100.2, AgCuNiA1202-1 alloys. Measuring range: 4% to 33%.
GB/T 15072.8-1994 history
2008GB/T 15072.8-2008 Test method of precious metal alloys.Determination of copper content for gold,palladium and silver alloys.Complexometric return titration using thiourea releasing EDTA
1994GB/T 15072.8-1994 Gold,Palladium and silver alloys-Determination of copper content