This part of GB/T 20975 specifies the determination of the content of aluminum and Japanese alloys by the paper chromatography gravimetric method and inductively coupled plasma atomic emission spectrometry. This section applies to the arbitration determination of the content of Kun in aluminum and aluminum alloys. The measuring range of gravimetric method of paper chromatography: 15.00%%-90.00%; the measuring range of inductively coupled plasma atomic emission spectrometry: 0.050%%-15.00%%.
GB/T 20975.37-2020 history
2020GB/T 20975.37-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 37:Determination of niobium content