A
A
I
I
R
R
P
P
L
L
A
A
N
N
E
E
T
T
E
E
C
C
H
H
N
N
I
I
C
C
A
A
L
L
D
D
E
E
S
S
C
C
R
R
I
I
P
P
T
T
I
I
O
O
N
N
,
,
O
O
P
P
E
E
R
R
A
A
T
T
I
I
N
N
G
G
,
,
M
M
A
A
I
I
N
N
T
T
E
E
N
N
A
A
N
N
C
C
E
E
A
A
N
N
D
D
R
R
E
E
P
P
A
A
I
I
R
R
M
M
A
A
N
N
U
U
A
A
L
L
5-3
Document No.:
EV97SLNOEN
Date of Issue:
02/2008
Revision:
-
5.3 Materials used
5.3.1 List of skin sheets
Duralumin sheets plated by aluminum are used for skins.
The following thickness are used:
0.016 in
0.4 mm
0.020 in
0.5 mm
0.024 in
0.6 mm
Material qualities are shown in the following table :
Z 424253.61
1
Czech Standard
Al Cu Mg 1
2
Mechanical properties
(Minimum)
Yield Point
Rp 0.2
260 MPa
Tensile strength
Rm
400 Mpa
Ductility [%]
15
(A10)
3
Chemical composition
Al
rest
[%]
Fe max
0.3
Mn
0.3 - 0.9
Cu
3.8 - 4.9
Zn max
0.3
Mg
1.2 - 1.8
Si max
0.3
4
Half-finished products
by Al plated Sheets
Al thickness
max.10 mm
0.4 in
5
Equivalent
U.S.A.
Alclad 2024
Standards
Germany
DIN 1745
Russia
D16AT
List of Skin Sheets:
Thickness
Airplane part
0.016 in
0.4 mm
Elevator skin (except L.E.)
Trim tab skin
Rudder skin
0.024 in
0.5 mm
Wing skin between rib 7 and 11
Flaps skin
Ailerons skin
Skin of upper rear part of a fuselage
0.024 in
0.6 mm
Wing skin between rib 1 and 7
Elevator leading edge
Skin of front, rear and bottom part of the fuselage
