1998HB 5219.1-1998 Determination of Copper Content by BCO Spectrophotometric Method for Chemical Analysis of Magnesium Alloys
1989HB 5421-1989 General principles and general provisions of chemical analysis methods for metallic materials
1970HB 5219.1-1982 Determination of Copper Content by BCO Spectrophotometric Method for Chemical Analysis of Magnesium Alloys
HB 5219.1-1982 Determination of Copper Content by BCO Spectrophotometric Method for Chemical Analysis of Magnesium Alloys was changed to HB 5421-1989 General principles and general provisions of chemical analysis methods for metallic materials.