Heritage Science

Table 4 Thickness of the Alclad surface layer on the studied P fragments

From: Corrosion of aircraft heritage: a comparison between modern and historic Duralumin alloys

Sample	Alclad layer thickness, µm
	Outer	Inner
P-1(p)	64 ± 3	49 ± 2
P-2(p)	30 ± 5	35 ± 5
P-3(p1)	82 ± 2^a or 40 ± 3^b	48 ± 2
P-3(p2)	109 ± 2	146 ± 5^a or 70 ± 10^b

^aNon-exfoliated/undamaged areas
^bExfoliated/damaged areas

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