This part specifies the method for the determination of zirconium content in copper and copper alloys. This section applies to the determination of zirconium content in copper and copper alloys. Measuring range: 0.10% to 0.70%.
GB/T 5121.20-2008 history
2008GB/T 5121.20-2008 Methods for chemical analysis of copper and copper alloys.Part 20:Determination of zirconium content
1996GB/T 5121.20-1996 Copper and copper alloys--Determination of zirconium content