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Global Rolled Products
4B Alloy
Alcoa’s 4B Alloy is the high performing alternative to 3xxx alloys and is often used
by color coating companies and end users like building panel manufacturers and
traffic sign manufacturers. A dedicated team in our plant in Köfém (Hungary) has
developed its particular chemical composition to reach a unique heat treatable and
work hardening alloy.
Due to the high amount of alloying elements, 4B provides excellent mechanical properties and a high
hardness level while maintaining superb formability. Laboratory and industrial tests have shown that 4B
behaves similar to 3xxx alloys in anisotropy, earing, bending and final aspect. 4B is particularly suitable for
painting applications but can be welded or anodized as well. Our technical department is available for any
recommendation about other applications.
Consumers and industrial users value aluminium because it is strong, lightweight and non-corrosive, but
also because it’s infinitely recyclable. Alcoa regards sustainability as an integral part of the product design
and engineering we provide to our customers. We pay particular attention to sustainable operating practices
throughout our facilities, and all our European rolling plants are environmentally certified to ISO 14001.
A lc oa. Advanc ing eac h generation.
Technical Data
Chemical Composition:
Si
Fe
min
1,1
0,2
max
2,0
0,7
Cu
Mn
Mg
Cr
Zn
Ti
0,6
0,3
1,1
0,2
0,05
0,1
0,15
Others
each
total
0,05
0,15
Numbers in weight %
Mechanical Properties:
Temper
Thickness (mm)
Mechanical Properties
Rm (Mpa)
Rp0,2 (Mpa)
A50 (%) min.
180º
90º
15
0t
0t
15
0t
0t
18
0t
0t
3,0 - 6,0
20
1,0 t
1,0 t
0,2 - 0,5
3
1,5 t
0t
3
1,5 t
0,5 t
4
1,5 t
1,0 t
0,2 - 0,5
0/
H111
H12
H14
H16
H18
H22
H24
Bending
0,5 - 1,5
1,5 - 3,0
0,5 - 1,5
1,5 - 3,0
100 - 140
120 - 170
min. 40
min. 90
3,0 - 6,0
5
0,2 - 0,5
2
2,0 t
0,5 t
2
2,0 t
1,0 t
3
2,0 t
1,0 t
0,5 - 1,5
1,5 - 3,0
140 - 180
min. 120
1,0 t
3,0 - 6,0
4
0,2 - 0,5
1
2,5 t
1,0t
0,5 - 1,5
1
2,5 t
1,5 t
1,5 - 2,0
2
2,5 t
2,0 t
0,2 - 0,5
1
1,5 t
1
2,5 t
0,5 - 1,5
160 - 200
min. 190
min. 140
2,0 t
min. 170
1,5 - 3,0
2
0,2 - 0,5
4
1,0 t
0t
4
1,0 t
0,5 t
5
1,0 t
1,0t
0,5 - 1,5
1,5 - 3,0
120 - 170
min. 90
3,0 t
3,0 - 6,0
6
0,2 - 0,5
3
1,5 t
0,5 t
3
1,5 t
1,0 t
4
1,5 t
1,0 t
0,5 - 1,5
1,5 - 3,0
140 - 180
3,0 - 6,0
min. 120
5
1,0t
2,0 t
Density
2,70 x 103 kg/m3
Melting Range
620-658 ºC
Alcoa GmbH Global Rolled Products
Heinrichstrasse 24, 40239 Düsseldorf, Germany
T: +49 211 4711 0 F: +49 211 47 111 90
W: www.alcoa.com/grp
Technical specifications are correct at time of printing. December 2013.
Designed and produced in the UK by Zest www.thinkzest.com
Physical Properties:
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