1. Chemical composition of EN AW-6061

in the aftermath of DIN EN 573-3 (in % of the mass, rest AL)

Si Fe Cu Mn Mg Cr Zn Ti Pb Other elements
0,4- 0,7 0,15- 0,15 0,8- 0,04- 0,25 0,15 – 0,15
0,8 0,4 1,2 0,35

2. mechanical properties of EN AW-6061

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
T4/T451 0,4 6,0 205 – 110 – – – 58
12,5 40,0 205 – 110 – – 15 58
40,0 80,0 205 – 110 – – 14 58
T6/T651 0,4 1,5 290 – 240 – – – 88
1,5 3,0 290 – 240 – – – 88
3,0 6,0 290 – 240 – – – 88
6,0 12,5 290 – 240 – – – 88

in the aftermath of DIN EN 755-2 pressed or DIN EN 754-2 drawn bars (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
T4 pressed – 200 180 – 110 – 13 15 –
T6 pressed – 200 260 – 240 – 6 8 –
T4 pressed – 80 205 – 110 – 14 16 –
T6 pressed – 80 290 – 240 – 8 10 –
Physical properties General properties
(Guide values for 20° C)
Density of g/cm3 2,70 Resistance to:
Solidification range ° C 580-640 – Sea water 2-3
Electrical conductivity MS/m 22-30 – Weather conditions 2
Thermal conductivity W/(mK) 170-200 Hot formability
Therm. linear expansion- – extrusion presses 2
Coeffizient 10-6/K 23 – Drop forging 2
Modulus of elasticity N/mm2 70.000 – Open die forging 2
Weldability Surface treatment
Fusion welding Protection anodizing 1
– Gas 3 Anodizing (decorative) 3
– WIG 2 Painting/Coating 2
– MIG 1
Resistance welding 3 Contact with food yes
Machinability
T4/T651 2

3. Main application / Special features of EN AW-6061:

Application for parts in aviation and in the USA instead of EN AW-6082. Especially in the USA also used for pressure vessels. This material is also selected for moulded and deep-drawn parts. The general properties largely correspond to the material EN AW-6082; only the resistance can become somewhat worse in the upper range of the permissible Cu content.