2004HB/Z 5218.7-2004 Methods for chemical analysis of aluminium alloys-Part 7:Determination of magnesium content by cupral Separation-EDTA volumetric method
1970HB 5218.7-1995 Aluminum Alloy Chemical Analysis Method Copper Reagent Separation——EDTA Titration Determination of Magnesium Content
1982HB 5218.7-1982 Determination of titanium content in aluminum alloy