This standard specifies the method for the determination of hafnium content in zirconium and zirconium alloys. This standard applies to the determination of hafnium content in zirconium and zirconium alloys. Measuring range: 0.005% to 0.30%.
GB/T 13747.20-1992 history
2017GB/T 13747.20-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 20:Determination of hafnium content—Inductively coupled plasma atomic emission spectrometry
1992GB/T 13747.20-1992 Zirconium and zirconium alloys--Determination of hafnium content--Emission spectrographic method