Aluminium square bar, manufactured in alloy 2011 T3, an alloy with excellent machinability, which enables the manufacture of complex parts by machining.
In calibrated quality, the tolerances of the bar are tighter, which avoids roughing operations depending on the part to be made.
The 20×20 drawn aluminium square bar is made of EN AW 2011 alloy. An aluminium alloy belonging to the 2000 family, with copper as the main alloying element.
It is one of the aluminium alloys best suited to machining by chip removal, which means it is widely used for the manufacture of all types of complex parts with medium-high mechanical requirements.
Depending on its origin and application, its lead content may not comply with RoHS or REACH regulations.
This aluminium alloy has the following composition under standard EN 573-3:
|
|
Si |
Fe |
Cu |
Pb |
Mg |
Cr |
Bi |
Zn |
Ti |
Others |
Al |
|
|
Indiv. |
Total |
|||||||||||
|
Min |
|
|
5.0 |
0.20 |
|
|
0.20 |
|
|
|
|
|
|
max. |
0.40 |
0.70 |
6.0 |
0.60 |
– |
– |
0.60 |
0.30 |
– |
0.05 |
0.15 |
Rest |
Bars manufactured in EN AW 2011 alloy are supplied in T3, T8 or T6 treatment states depending on the extruded or calibrated quality of the alloy.
Their mechanical properties, in accordance with standards EN 745-2 and 755-2, are as follows:
|
Condition |
Main measurement mm |
Rm MPa |
Rp0.2 MPa |
A min. |
A50 mm min. |
HBW hardness* |
||
|
min. |
Max. |
min. |
Max. |
|||||
|
T3 |
≤ 40 |
320 |
– |
270 |
– |
10 |
8 |
90 |
|
40 < d ≤ 50 |
300 |
– |
250 |
– |
10 |
– |
90 |
|
|
40 < d ≤ 80 |
280 |
– |
210 |
– |
10 |
– |
90 |
|
|
T8 |
≤ 80 |
370 |
– |
270 |
– |
8 |
6 |
115 |
|
T6 |
≤ 75 |
310 |
– |
230 |
– |
8 |
6 |
110 |
|
75 < d ≤ 200 |
295 |
– |
195 |
– |
6 |
– |
110 |
|
*Reference value for informational purposes only.
The EN AW 2011 alloy has the following physical properties:
|
Elastic modulus |
Coefficient of expansion per °C (20°-100°C) |
Thermal conductivity |
Resistivity µW·cm(2) /cm |
|
|
W/mK |
Cal/cm·s·°C |
|||
|
70,600 MPa |
22.5 x 10-6 |
172 (T8) 151 (T3) |
0.41 (T8) 0.36 (T3) |
3.8 (T8) 4.4 (T3) |
The general performance of the EN AW 2011 aluminium alloy is as follows in the areas listed below:
– Corrosion resistance: Low.
– Machinability: Excellent.
– Formability: Low.
– Suitability for protective anodising: Fair.
The classification is made in the following range: excellent, very good, good, fair and low.
The main applications of the EN AW 2011 alloy are as follows:
– Complex shaped parts with high mechanical properties for any type of sector that does not require corrosion resistance.
