6XXX Plate - English

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6xxx Plate
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6xxx
6XXX contain magnesium and silicon as
the major alloying elements.
Strength:
Moderately high levels of strength are
obtained through heat treating to the T651
condition, giving higher strength levels than
5XXX series alloys.
Machinability:
6XXX plate alloys in the T651 condition are
easier to machine than 5XXX alloys.
Forming:
6XXX plate alloys can be cold formed in the
T651 or T451 temper. Formability is better in
the T451 than the T651 temper and
increases with decreasing thickness (see
overleaf).
Corrosion resistance:
6XXX alloys, in the T651/T652/T6 temper,
have good corrosion resistance. Unlike
some 5XXX alloys, 6XXX do not suffer
degradation in corrosion resistance after
exposure to elevated temperatures.
Welding:
6XXX are readily weldable by either GTA-W
or GMA-W processes provided that a
suitable filler material is used. Welding
reduces the tensile strength to 165-200 MPa
in the heat affected area. In special
circumstances, a post weld heat treatment
can be applied to restore some of the lost
strength in this area.
6XXX Applications:
The principle 6XXX plate alloys are 6082 and
6061.
6082-T651 and 6061-T651 are now
superseding low-carbon steels in structural
applications where the benefits of lightness,
specific stiffness, corrosion resistance and
ease of fabrication can be exploited:
Machined components
Structural members
Cargo containers
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2005. jœnius 3. 12:13:49
Color profile: Generic CMYK printer profile
Composite 200 lpi at 45 degrees
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6xxx series alloys technical data
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STANDARD DIMENSIONAL AVAILABILITY
Alloy
6082
6061
Temper
Width (mm)
Thickness (mm)
Length (mm)
Min
Max
Max
Max
Mill finish
19
6.35
3150
T451
105
>19
20000
2978
T651
203.2
>105
2973*
305
T452 T652 >203.2
3000
1220**
404
>203.2
T6
3000
2080
590
>6.35
F
3000
2080
Brushed Finish (available one or two side film coated - on request)
50
8
T451 T651
8000
1600*
70
8
T4 T6
8000
2000*
Mill finish
25
6.35
3150
T451
138
>25
20000
2978
T651
>138
203.2
2973*
305
T452 T652 >203.2
3000
1220**
>203.2
404
T6
3000
2080
>6.35
590
F
3000
2080
Brushed Finish (available one or two side film coated - on request)
8
70
T451 T651
8000
1600*
8
70
T4 T6
8000
2000*
0
Material in the T6 temper has not been
stress relieved by either controlled
stretching or cold compression.
Consequently, this product may be liable to
distortion and/or cracking during any metal
machining or metal removing process.
Alcoa does not accept any liability for such
distortion or cracking and will not accept
any consequential costs, losses or
personal injury claims from such.
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. Where indicated, both Mill Finish and Brushed Finish
are available
3. * denotes maximum width decreases with increasing
thickness
4. ** denotes wider widths may be available on request
FORMABILITY
Thickness
Alloy
6061
6061
6082
6082
Temper
T451
T651
T451
T651
6 mm
3t
3.5t
3t
3.5t
9 mm
3.5t
4.5t
3.5t
4.5t
12 mm
4t
5t
4t
5t
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.
TYPICAL PHYSICAL PROPERTIES
Alloy
Temper
Relative
Density
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6061
6082
T651
T651
2.7
2.7
Co-efficient
or Linear
Expansion
(20°C-100°C)
-6
10 /°C
Thermal
Conductivity
(0-100°C)
W/m°C
24
23
156
184
Electrical
Resistivity
(20°C) microOhm cm
4
3.7
Melting
Range
°C
Young's
Modulus
(GPa)
100
570-650
570-660
69
69
95
75
European Mill Products
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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