This standard specifies the measurement method for aluminum content in copper and copper alloys. This standard applies to the determination of aluminum content in copper and copper alloys. Measuring range: 0.0010% to 0.50%.
GB/T 5121.4-1996 history
2008GB/T 5121.4-2008 Methods for chemical analysis of copper and copper alloys.Part 4:Determination of carbon and sulfur content
1996GB/T 5121.4-1996 Copper and copper alloys--Determination of carbon and sulfur content