Table 5 Elemental composition of P, B, and modern alloy samples measured by EDS analysis (wt.%), averaged over the three cross-sectioning planes
From: Corrosion of aircraft heritage: a comparison between modern and historic Duralumin alloys
Sample name | Mg | Al | Si | Ti | Cr | Mn | Fe | Ni | Cu | Zn |
|---|---|---|---|---|---|---|---|---|---|---|
P-1(p) | 1.39 ± 0.02 | 92.95 ± 0.02 | 0.14 ± 0.01 | 0.01 ± 0.00 | 0.01 ± 0.01 | 0.49 ± 0.03 | 0.24 ± 0.04 | 0.01 ± 0.01 | 4.69 ± 0.08 | 0.05 ± 0.01 |
P-1(s) | 1.32 ± 0.06 | 93.15 ± 0.45 | 0.18 ± 0.03 | 0.01 ± 0.01 | 0.02 ± 0.02 | 0.55 ± 0.02 | 0.31 ± 0.01 | 0.02 ± 0.01 | 4.33 ± 0.37 | 0.08 ± 0.01 |
P-2(p) | 1.37 ± 0.02 | 92.94 ± 0.08 | 0.09 ± 0.01 | 0.01 ± 0.01 | 0.03 ± 0.01 | 0.51 ± 0.01 | 0.17 ± 0.01 | 0.02 ± 0.00 | 4.75 ± 0.05 | 0.03 ± 0.01 |
P-3(p1) | 1.47 ± 0.01 | 92.84 ± 0.08 | 0.17 ± 0.01 | 0.01 ± 0.01 | 0.01 ± 0.01 | 0.55 ± 0.01 | 0.28 ± 0.02 | 0.01 ± 0.00 | 4.57 ± 0.04 | 0.04 ± 0.01 |
P-3(p2) | 1.37 ± 0.03 | 92.78 ± 0.06 | 0.14 ± 0.02 | 0.01 ± 0.01 | 0.01 ± 0.01 | 0.55 ± 0.02 | 0.29 ± 0.02 | 0.02 ± 0.01 | 4.72 ± 0.04 | 0.06 ± 0.01 |
B(p) | 0.76 ± 0.02 | 93.29 ± 0.36 | 0.59 ± 0.06 | 0.06 ± 0.03 | 0.02 ± 0.02 | 0.70 ± 0.05 | 0.37 ± 0.06 | 0.04 ± 0.03 | 4.14 ± 0.24 | 0.04 ± 0.03 |
B(s) | 1.46 ± 0.03 | 92.97 ± 0.21 | 0.13 ± 0.03 | 0.03 ± 0.02 | 0.01 ± 0.01 | 0.76 ± 0.04 | 0.18 ± 0.02 | 0.02 ± 0.02 | 4.40 ± 0.18 | 0.04 ± 0.04 |
2024(p) | 1.34 ± 0.00 | 93.66 ± 0.03 | 0.03 ± 0.00 | 0.04 ± 0.01 | 0.03 ± 0.01 | 0.44 ± 0.03 | 0.08 ± 0.01 | 0.01 ± 0.01 | 4.24 ± 0.02 | 0.10 ± 0.02 |
2024(s) | 1.30 ± 0.02 | 92.78 ± 0.06 | 0.09 ± 0.00 | 0.03 ± 0.01 | 0.01 ± 0.01 | 0.66 ± 0.01 | 0.29 ± 0.01 | 0.01 ± 0.01 | 4.68 ± 0.06 | 0.12 ± 0.02 |
2017A(p) | 0.55 ± 0.01 | 93.76 ± 0.12 | 0.64 ± 0.04 | 0.03 ± 0.01 | 0.04 ± 0.01 | 0.49 ± 0.02 | 0.30 ± 0.02 | 0.01 ± 0.01 | 3.93 ± 0.07 | 0.20 ± 0.02 |