Table 3 A mass percentage (Mass%) and atomic percentage (Atom%) of elements of each density standard made of the pure aluminum (Alu), aluminum alloy (duralumin, Dur), cuprum alloy (Cup), iron–nickel alloy (IrNi), and iron–silicon alloy (IrSi)
Density standard | Alu | Dur | Cup | IrNi | IrSi |
|---|---|---|---|---|---|
Mass% | Al 94.87 ± 0.27 Cu 3.56 ± 0.19 Si 0.85 ± 0.04 Mg 0.71 ± 0.02 | Al 72.17 ± 0.46 Cu 17.53 ± 0.70 Zn 7.28 ± 0.54 O 1.81 ± 0.10 Fe 0.61 ± 0.09 Mn 0.60 ± 0.09 | Cu 56.24 ± 0.72 Zn 39.30 ± 0.72 Pb 2.37 ± 0.10 O 1.84 ± 0.06 Cl 0.25 ± 0.02 | Fe 92.18 ± 3.26 Ni 7.82 ± 1.24 | Fe 97.93 ± 0.65 Si 2.07 ± 0.05 |
Atom% | Al 96.81 ± 0.27 Cu 1.54 ± 0.08 Si 0.85 ± 0.04 Mg 0.81 ± 0.03 | Al 83.66 ± 0.53 Cu 8.63 ± 0.34 Zn 3.48 ± 0.26 O 3.54 ± 0.20 Fe 0.34 ± 0.05 Mn 0.34 ± 0.05 | Cu 54.63 ± 0.70 Zn 37.11 ± 0.68 Pb 0.71 ± 0.03 O 7.11 ± 0.22 Cl 0.44 ± 0.04 | Fe 92.53 ± 3.27 Ni 7.47 ± 1.19 | Fe 95.98 ± 0.63 Si 4.02 ± 0.10 |