90.93 Standard confirmed Nov 19, 2020
CEN
CEN/TC 133 Copper and copper alloys
European Norm
77.040.30 Chemical analysis of metals | 77.120.30 Copper and copper alloys
This European Standard specifies two flame atomic absorption spectrometric methods (FAAS) for the determination of the silver content of copper and copper alloys in the form of unwrought, wrought and cast products.
The methods are applicable to products having silver mass fractions between 0,01 % and 2,0 %.
a) Method A is applicable to copper and copper alloys having silver mass fractions between 0,01 % and 1,0 % and containing antimony or tin not greater than 0,005 0 % or silicon not greater than 0,010 %.
b) Method B is applicable to copper and copper alloys having silver mass fractions between 0,01 % and 2,0 % and antimony or tin greater than 0,005 % and silicon greater than 0,010 %.
PUBLISHED
EN 15915:2010
90.93
Standard confirmed
Nov 19, 2020