EN AW – 7075 (AlZn55MgCu – 3.4365)

Stand: Juni 2015 - Quelle: DIN EN 573-3 / EN 515 / DIN 17611:2011

1. Chemical composition of EN AW – 7075

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
0,4 0,5 1,2-2,0 0,3 2,1-2,9 0,18-0,28 5,1-6,1 0,2 0,25Zr+Ti 0,15

2. mechanical properties of EN AW – 7075

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
T651 6,0 12,5 540 460 8 160
12,5 25,0 540 470 6 161
25,0 50,0 530 460 5 158
50,0 60,0 525 440 4 155
60,0 80,0 495 420 4 147
80,0 90,0 490 390 4 144
90,0 460 360 3 135
100,0 410 300 2 119
120,0 360 260 2 104
Press
T6 150 530 470 6
Physical Properties   General properties
(Guide values for 20° C)
Density of g/cm3 2,80 Resistance to:
Solidification range ° C 480-640 – Sea water 4-5
Electrical conductivity MS/m 19-23 – Weather conditions 4-5
Thermal conductivity W/(mK) 130-160 Hot formability
Therm. linear expansion- – extrusion presses 5
Coeffizient 10-6/K 23,4 – Drop forging 4
Modulus of elasticity N/mm2 70.000 – Open die forging 4
Weldability Surface treatment
Fusion welding Protection anodizing 3
– Gas 6 Anodizing (decorative) 6
– WIG 6 Painting/Coating 3
– MIG 6
Resistance welding 2 Kontakt mit Lebensmittel no
Machinability T651 2

3. Main application / Special features of EN AW – 7075:

Mould and tool making, cutting and punching tools with long service lives. Due to production, the core strength decreases continuously from 80 mm.

Top