Aluminium round bar, manufactured in alloy 7075 T6, an alloy with high mechanical characteristics and good corrosion resistance, as well as suitability for hard and protective anodising. Ideal for structural parts in aviation, defence and automotive applications.
In calibrated quality, the tolerances of the bar are tighter, which avoids roughing operations depending on the part to be made.
The Ø15 drawn aluminium round bar is made of EN AW 7075 alloy. An aluminium alloy belonging to the 7075 family, with zinc as the main alloying element.
It is the standard commercial alloy with the highest mechanical characteristics and high fatigue resistance, making it ideal for structural components in the most demanding industries such as aeronautics, defence and automotive.
This aluminium alloy has the following composition under standard EN 573-3:
|
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Zi |
Ti |
Others |
Al |
||
|
Indiv. |
Total |
||||||||||
|
min |
1.20 |
2.10 |
0.18 |
5.10 |
|||||||
|
max. |
0.40 |
0.50 |
2.00 |
0.30 |
2.90 |
0.28 |
6.10 |
0.20 |
0.05 |
0.15 |
Rest |
Bars manufactured in EN AW 7075 alloy are supplied in T6 treatment condition.
Their mechanical properties, in accordance with standards EN 745-2 and 755-2, are as follows:
|
Temper |
Main measurement mm |
Rm MPa |
Rp0.2 MPa |
A min. |
A50 mm min. |
HBW hardness* |
||
|
min. |
Max. |
min. |
Max. |
|||||
|
T6 (Calibrated) |
≤ 80 |
540 |
– |
485 |
– |
7 |
6 |
150 |
|
T6 (Extruded) |
≤ 25 |
540 |
– |
480 |
– |
7 |
5 |
150 |
|
25 < d ≤ 100 |
560 |
– |
500 |
– |
7 |
– |
150 |
|
|
100 < d ≤ 150 |
530 |
– |
470 |
– |
6 |
– |
150 |
|
|
150 < d ≤ 200 |
470 |
– |
400 |
– |
5 |
– |
150 |
|
*Reference value for informational purposes only.
The EN AW 7075 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 |
23.5 x 10-6 |
121 (T6) |
0.29 (T6) |
5.2 (T6) |
The general performance of the EN AW 7075 aluminium alloy is as follows in the areas listed below:
– Corrosion resistance: Low.
– Weldability: Low.
– Machinability: Good.
– Formability: Low.
– Suitability for anodising: Fair.
The classification is made in the following range: excellent, very good, good, fair and low.
The main applications of the EN AW 7075 alloy are as follows:
– High-strength parts in applications where weight is a key characteristic: aeronautics, aerospace, defence, transport, etc.
– High-pressure hydraulic parts.
