1. Chemical composition of EN AW-7022
in the aftermath of DIN EN 573-3 (in % of the mass, rest AL)
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Zn |
Ti |
Remark |
Other elements |
0,5 |
0,5 |
0,5-1,0 |
0,1-0,4 |
2,6-3,7 |
0,1-0,3 |
4,3-5,2 |
- |
- |
0,15 |
2. mechanical properties of EN AW-7022
in the aftermath of DIN EN 485-2 Sheets and plates (common conditions)
Condition |
Nominal thickness |
Tensile strength |
Plug-in limit |
Ultimate elongation |
Rigor |
|
in mm |
Rm in MPa |
Rp0,2 in MPa |
in % (min.) |
HBS |
|
over |
up to |
min |
max |
min |
max |
A50 |
A |
|
T6 |
3,0 |
12,5 |
450 |
- |
370 |
- |
8 |
- |
133 |
T651 |
12,5 |
25,0 |
450 |
- |
370 |
- |
- |
8 |
133 |
|
25,0 |
50,0 |
450 |
- |
370 |
- |
- |
7 |
133 |
|
50,0 |
100,0 |
430 |
- |
350 |
- |
- |
5 |
127 |
|
100,0 |
200,0 |
410 |
- |
330 |
- |
- |
3 |
121 |
Physical properties |
General properties |
(Guide values for 20° C) |
|
Density of g/cm3 |
2,78 |
Resistance to: |
|
Solidification range ° C |
485-640 |
- Sea water |
5 |
Electrical conductivity MS/m |
19-23 |
- Weather conditions |
4 |
Thermal conductivity W/(mK) |
130-160 |
Hot formability |
|
Therm. linear expansion- |
|
- extrusion presses |
4 |
Coeffizient 10-6/K |
23,6 |
- Drop forging |
4 |
Modulus of elasticity N/mm2 |
70.000 |
- Open die forging |
4 |
Weldability |
|
Surface treatment |
|
Fusion welding |
|
Protection anodizing |
2 |
- Gas |
6 |
Anodizing (decorative) |
6 |
- WIG |
6 |
Painting/Coating |
3 |
- MIG |
6 |
|
|
Resistance welding |
2 |
Contact with food |
no |
|
- |
|
|
Machinability T651
|
2 |
|
|
3. Main application / Special features of EN AW-7022:
Mould and tool making
Due to the lower Cu content anodisable with uniform surface.