This standard specifies the method for the determination of zirconium content in gold alloys. This standard applies to the determination of zirconium content in AuNiFeZr9-2-0.3 and AuNiFeZr5-1.5-0.3 alloys. Measuring range: 0.1% ~ 05%.
GB/T 15072.20-1994 history
2008GB/T 15072.18-2008 Test method of precious metal alloys.Determination of zirconium and gadolinium contents for gold alloys.Inductively coupled plasma atomic emission spectrometry
GB/T 15072.20-1994 Gold alloys-Determination of zirconium content was changed to GB/T 15072.18-2008 Test method of precious metal alloys.Determination of zirconium and gadolinium contents for gold alloys.Inductively coupled plasma atomic emission spectrometry.