2XXX Plate - English

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2XXX series alloys contain copper as
the main alloying element, often in
combination with magnesium and
silicon.
Corrosion:
2XXX alloys are susceptible to corrosion and
may be require protective surface treatments
such as anodising or painting.
Strength:
Strength is developed through solution
treatment and natural ageing (T351,
T451) or artificial age hardening (T651,
T851). Strength levels in the naturally
aged alloys may be further increased by
artificial ageing, but this reduces fatigue
properties and toughness.
2XXX alloys are generally used where good
levels of strength and toughness are required.
The most widely used alloys in this series are
2014A, 2017A and 2024.
Applications include:
Machined parts
Truck wheels
Load cells
Welding:
With the exception of a few specialised
alloys the 2XXX series alloys are not
generally weldable by fusion welding.
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2xxx series alloys technical data
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STANDARD DIMENSIONAL AVAILABILITY
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Alloy
Temper
Min
Thickness
(mm)
Max
Thickness
(mm)
Max
Width
(mm)
6.35
T651
2014
2014A
T652
13
3150
>13
72
2978
>72
188
2954*
188
203.2
1104*
>203.2
305
6.35
2017A
T451
3150
>12
69
2978
>69
180
2942*
>180
194
1101*
6.35
2024
T351
T851
1220**
12
10
3150
>10
59
2978
>59
154
2958*
>154
168
1101*
Max
Length
(mm)
Alcoa Europe only supply plate that exceeds the
requirements issued by the major specifying authorities
e.g. European Standards (a summary of the main
requirements of EN485 is available on request).
20000
3000
20000
20000
1. These dimensions show only the range of capabilities and cannot necessarily be
provided in every combination of these sizes. Other sizes may be available, subject
to enquiry.
2. The above alloys are only available in Mill Finish
3. * denotes maximum width decreases with increasing thickness
4. ** denotes wider widths may be available on request
FORMABILITY
2014/2014A, 2017A AND 2024
2014 and 2014A are commonly supplied in the T651
temper, offering a higher level of strength than 6XXX, and
good toughness. Alcoa can also supply 2014/2014A in
O condition, which gives good formability and permits
further strengthening by means of heat treatment.
2017A and 2024 are characterised by high levels of
strength and toughness, allied to good fatigue
properties. Because they develop good levels of
strength through natural ageing they are usually
supplied in the T451 and T351 conditions respectively.
Strength in 2024 can be further increased by means of
artificially ageing, but this is achieved at the expense of
fatigue properties and toughness. Fatigue resistance is
higher in 2024 T351 compared to 2017A T451. These
alloys are often selected when fatigue is an important
consideration and are widely used for other engineering
applications.
Thickness
Alloy
Temper
6 mm
9 mm
12 mm
2014A
T651
8t
8.5t
9t
2017A
T451
7t
7.5t
8t
2024
T351
7t
7.5t
8t
Radii expressed as thickness (t) are minimum
recommended for bending plates in a standard press
brake with air bend dies. Minimum permissible radii will
also vary with design and condition of tooling. Forming
over smaller radii is possible immediately after solution
heat treatment and quenching.
Advice and further details on Alcoa's specialised alloys is available on request.
TYPICAL PHYSICAL PROPERTIES
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Alloy
Temper
2014A
2017A
2024
T651
T451
T351
Relative
Density
2.81
2.81
2.77
Co-efficient
or Linear
Expansion
(20°C - 100°C)
10-6/°C
22.0
23.6
23.0
Thermal
Conductivity
(0-100°C)
W/m°C
Electrical
Resistivity
(20°C) microOhm cm
Melting
Range
°C
Young's
Modulus
(GPa)
159
134
151
4.5
5.0
5.7
530-610
510-640
500-640
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European Mill Products
5
Avenue Giuseppe Motta 31-33 CH-1202 Geneva, Switzerland
Tel.: +41 22 919 60 00 Fax: +41 22 919 61 00
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