EN AW – 6023 (AlSi1Sn1MgBi)

Stand: September 2018 - Quelle: DIN EN 573-3 / EN 515 / DIN 17611:2011

1. Chemical composition of EN AW – 6023

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
0,6- 0,5 0,2- 0,2- 0,4- 0,3-0,8 Bi 0,15
1,4 0,5 0,6 0,9 0,6-1,2 Sn

2. mechanical properties of EN AW – 6023

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
Pressed
T6 150 310 260 8
150 200 260 240 8
Drawn
T8 60 345 315 4
T9 60 360 330 4
Physical properties General properties
(Guide values for 20° C)
Density of g/cm3 2,72 Resistance to:
Solidification range ° C k.A. – Sea water 3
Electrical conductivity MS/m 26 – Weather conditions 2
Thermal conductivity W/(mK) 172 Hot formability
Therm. linear expansion- – extrusion presses k.A.
Coeffizient 10-6/K 23,4 – Drop forging
Modulus of elasticity N/mm2 70.000 – Open die forging
Weldability  Surface treatment
Fusion welding Protection anodizing 2
– Gas Anodizing (decorative) 2
– WIG 3 Painting/Coating 2
– MIG 3
Resistance welding 3 Contact with food n.a.
Machinability
T6/T8 2

3. Main application / Special features of EN AW – 6023:

This alloy has been specially developed for applications in the electronics and automotive industries and is known for its good machining and anodising properties. It is also used as an alternative alloy to EN AW-6012, where lead is replaced by tin and bismuth and all technological properties are retained.

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