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13

Al26,982

With an appropriate approval* Alsi7Mg can be used for lightweight manufacturing.

Aluminium alloy (powder), chemical composition AlSi7Mg according to F357 (AMS 4289).

CHEMICAL COMPOSITION

Component Indicative value (%)

Si 6.5 - 7.5

Mg 0.40 - 0.70

Cu 0 – 0.20

Ti 0.04 - 0.20

Fe 0 – 0.10

Mn 0 – 0.10

Zn 0 – 0.10

Al Balance

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GE Additive AlSi7Mg

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MICROSECTION

Test piece (x 25 magnification)

AlSi7MgAluminium alloy

With an appropriate approval* AlSi7Mg is a widespread, heat-treatable aluminum alloy (F357) that can be used for manufacturing lightweight functional components in the automotive and aerospace sectors. This material maintains a high mass-to-strength ration with good corrosion resistance for an aluminum alloy, ideal for applications requiring a combination of excellent thermal properties with low weight.

RANGE OF APPLICATION

TECHNICAL DATA IN AS-BUILT CONDITION

Components made from aluminium alloy AlSi7Mg display a homogeneous, dense structure after they are manufactured by means of the direct metal laser melting (DMLM) process.

90° (horizontal) 0° (upright)

Yield strength Rp0,2 1 240 ± 30 N/mm2 215 ± 30 N/mm2

Ultimate Strength Rm 1 400 ± 30 N/mm2 405 ± 30 N/mm2

Elongation A 1 15 ± 3 % 18 ± 3 %

Young’s modulus 1 ca. 70 · 103 N/mm2 ca. 70 · 103 N/mm2

Hardness 2 110 +- 5 HV5 110 +- 5 HV5

1 Tensile test according to DIN EN 50125 at 20°C2 Hardness test according to the material manufacturer’s data sheet

SURFACE ROUGHNESS

Angle of Specimen Surface Roughness Ra3

0° (upright) 6 ± 2 µm

Upside Downside

45° 11 ± 4 µm 15 ± 6 µm

60° 8 ± 2 µm 9 ± 2 µm

75° 6 ± 2 µm 7 ± 2 µm

3 Surface roughness test according to the material manufacturer’s data sheet