Data sheet AA2011
General properties
Aluminium-copper alloy, general purpose, whose main properties are high strength, fair toughness, good resistance to atmospheric corrosion and good machinability.
Nowadays is not extensively used; it is the first modern aluminium - copper alloy developed by the aluminium industry.
Generally used in form of plates.
Ex stock the following tempers are available:
- T4 (sheets and bars)
- T451 / T452 (plates).
Other tempers are delivered upon request; sheets are manufactured also with cladding.
Typical applications
Machined parts moulding dies for shoe industry.
Minimum mechanical properties at room temperature
Sheets and plates
Temper |
Thickness (mm) |
Rm (MPa) |
Rp0.2 (MPa) |
A % |
Bending radius (1)(2) |
BHN (1) |
|
T4 T451
|
0.4 |
1.5 |
390 |
245 |
14 |
3.0 x s |
110 |
1.5 |
6.0 |
390 |
245 |
15 |
5.0 x s |
110 |
|
6.0 |
12.5 |
390 |
260 |
13 |
8.0 x s |
111 |
|
12.5 |
40 |
390 |
250 |
12 |
110 |
||
40 |
100 | 385 |
240 |
10 |
108 |
||
100 |
1200 |
370 |
240 |
8 |
105 |
||
120 |
150 |
350 |
240 |
4 |
101 |
||
(1) Reference values
(2) Bending at 90°
Minimum mechanical properties at room temperature
Bars
Temper |
Thickness (mm) |
Rm (MPa) | Rp0.2 (MPa) |
A % |
T4 |
Up to 25 | 380 | 260 | 12 |
| From 25 to 75 | 400 | 270 | 10 | |
| From 75 to 150 | 390 | 260 | 9 | |
| From 150 to 200 | 370 | 240 | 8 | |
| From 200 to 250 | 360 | 220 | 7 |
Physical properties
Specific gravity 2.790 g/cm3 at 20 °C
Thermal conductivity at 20 °C: 126 W/m °C
Elastic modulus: 71100 Mpa
Linear thermal expansion coefficient
Temperature °C |
10-6 mm/mm °C |
-50 > 20 |
|
20 > 100 |
23.6 |
100 > 200 |
24.0 |
200 > 300 |
25.0 |
Technological properties
Ease of machining: good
Ease of cold forming; poor
Ease of welding: poor (TIG - MIG)