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Products are strain hardened at
the last operation to specified
tensile property limits and meet
specified levels of corrosion
resistance in accelerated type
corrosion tests. Corrosion tests
include inter-granular and exfoliation.
This temper is suitable for
continuous service at temperatures
not higher than 65°C.
The first digit following the letter
T is used to identify the specific
sequences of basic treatments.
Numerals 1 to 10 have
been assigned as follows:
• T1: Cooled from an elevated
temperature shaping process and
naturally aged to a substantially
stable condition
• T2: Cooled from an elevated
temperature shaping process,
cold-worked, and naturally aged
to a substantially stable condition
• T3: Solution heat-treated coldworked,
and naturally aged to a
substantially stable condition
• T4: Solution heat-treated and
naturally aged to a substantially
stable condition
• T5: Cooled from an elevated
temperature shaping process and
then artificially aged
• T6: Solution heat-treated and
then artificially aged
• T7: Solution heat-treated and
over-aged/stabilized
• T8: Solution heat-treated, cold
worked and then artificially aged
• T9: Solution heat-treated, artificially
aged and then cold-worked
• T10: Cooled from an elevated
temperature shaping process,
cold-worked, and then artificially
aged.
For more details, please refer to
EN 515.
5. Subdivision of T temper designations
Extrusion press
43
EUROPEAN ALUMINIUM ASSOCIATION
6. Typical alloys for commercial vehicles
Out of the vast variety of known
alloys as listed in EN 573-3 and
in the Teal Sheets, just a few are
of importance for the manufacture
of commercial vehicles.
Selection criteria are:
• availability of semi-finished
products
• mechanical properties
• physical properties
• suitability for fabrication
• weldability
• corrosion resistance
In the following tables the most
widely used alloys for the application
in commercial vehicles
are presented.
Aluminium coils
44
ALUMINIUM IN COMMERCIAL VEHICLES CHAPTER V ALUMINIUM ALLOYS FOR COMMERCIAL VEHICLES 44 | 45
REFERENCE STANDARDS FOR MECHANICAL PROPERTIES OF
WROUGHT ALLOYS – FLAT ROLLED PRODUCTS
Alloy Standards2
3003 EN 485-2
5005 EN 485-2
5059 EN 485-2 and EN14286
5083 EN 485-2 and EN14286
5086 EN 485-2 and EN14286
5088 EN 485-2 and EN14286
5182 EN 485-2 and EN14286
5186 EN14286
5383 EN 485-2 and EN14286
5454 EN 485-2 and EN14286
5754 EN 485-2 and EN14286
6061 EN 485-2
6082 EN 485-2
6.1. Flat rolled products TABLE V.2
In commercial vehicles, the most
commonly used alloys are 3003,
5005, 5059, 5083, 5086, 5088,
5182, 5186, 5383, 5454, 5456,
5754, 6061 and 6082.
The mechanical properties of
these alloys can be found in the
standards listed in Table V.2 and
Table V.3 gives indications on
engineering suitability.
2. See standards denominations at the end of this chapter section 9.
Aluminium rolling slabs
45
EUROPEAN ALUMINIUM ASSOCIATION
ENGINEERING SUITABILITY FOR ROAD TRANSPORT APPLICATIONS –
FLAT ROLLED PRODUCTS
Alloy Temper Shaping Welding Anodizing Corrosion resistance
3003 H14,H24,H16 B A A A
5005 H14,H24 B A A A
5059 O, H111 B A A A
5083 O,H111 A A A A
H116,H22,H24, H34 C A A A
5086 O,H111 A A A A
H116,H22,H24 C A A A
5088 O, H111 A A A A
5182 O, H111 A A A A
5186 O, H111 A A A A
5383 H22, H32 B A A A
5454 O,H111 A A A A
H22,H24 B A A A
5456 H34 C A A A
5754 O,H111 A A A A
H22,H24 B A A A
6061 T4 C A A A
T6 D A A A
6082 T4 C A A A
T6 D A A A
A = very good; B = good; C = fair; D = poor, to be avoided
TABLE V.3
46
ALUMINIUM IN COMMERCIAL VEHICLES CHAPTER V ALUMINIUM ALLOYS FOR COMMERCIAL VEHICLES 46 | 47
6.2. Extruded products
(forged products)
In commercial vehicles, the most
commonly used alloys are 6060,
6005A, 6008, 6106, 6082,
6061 and 7020.
The mechanical properties of
these alloys can be found in
standard EN 755-2 and Table V.4
gives indications on their engineering
suitability.
ENGINEERING SUITABILITY – EXTRUDED & FORGED PRODUCTS
Alloy Temper Welding Anodizing Corrosion resistance
6060 all A A A
6005A all A A A
6008 all A A A
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