Mẫu chuẩn thành phần nhôm BAM-M320
This report describes preparation, analysis and certification of the aluminium alloy reference material
BAM-M320. The certified reference material (CRM) is available in the form of discs (65 mm diameter
and 30 mm height). It is intended for establishing and checking the calibration of optical emission
and X-ray spectrometers (excluding micro-analysis) for the analysis of samples of similar matrix
composition. It is also suitable for validation and quality control of wet chemical analysis methods.
The following mass fractions and uncertainties have been certified:
Element Mass fraction 1) in % Uncertainty 2) in %
Si 0.197 0.007
Fe 0.206 0.006
Cu 0.147 0.005
Mn 0.699 0.008
Mg 3.98 0.08
Cr 0.1044 0.0023
Zn 0.252 0.006
Ti 0.102 0.004
Ga 0.0208 0.0008
Sc 0.282 0.007
Zr 0.102 0.005
in mg/kg in mg/kg
Ni 20.9 1.3
Be 22.4 0.7
Ca 11.7 2.2
Cd 15.2 1.9
Co 20.9 1.2
Li 9.1 0.4
Na 6.4 1.3
Pb 44.8 2.4
Sn 45.6 2.9
V 75.9 2.5
1 Unweighted mean value of the means of accepted sets of data (consisting of at least 6 single results), each set being
obtained by a different laboratory and/or a different method of measurement.
2 Estimated expanded uncertainty U with a coverage factor of k = 2, corresponding to a level of confidence of about 95%,
as defined in the ISO/IEC Guide 98-3:2008 [Uncertainty of measurement -- Part 3: Guide to the Expression of
Uncertainty in Measurement (GUM:1995)].