Aluminium (AlSi10Mg)
AlSi10Mg products provide good strength and hardness, so are usually used to make components able to withstand high loads and in applications that require good thermal and lightness characteristics.
This is an alloy with good melting properties, generally used in the production of elements with thin structures and complex geometry.
Technical Data of the material and physical and chemical properties
| Technical Data | Test Method | |
| Typical achievable part accuracy | - - - - - - - | ± 100 μm |
| Smallest wall thickness [1] | - - - - - - - | approx. 0.3 – 0.4 mm |
| Surface roughness, as built, cleaned | - - - - - - - | Ra 6 - 10 μm, Rz 30 - 40 μm |
| Surface roughness, after micro shot-peening | - - - - - - - | Ra 7 - 10 μm, Rz 50 - 60 μm |
| Physical and Chemical properties of parts | Test Method | |
| Material composition | - - - - - - - |
Al (balance) Si (9.0 - 11.0 wt-%)≤ Fe (≤ 0.55 wt-%) Cu (≤ 0.05 wt-%) Mn (≤ 0.45 wt-%) Mg (0.2 - 0.45 wt-%) Ni (≤ 0.05 wt-%) Zn (≤ 0.10 wt-%) Pb (≤ 0.05 wt-%) Sn (≤ 0.05 wt-%) Ti (≤ 0.15 wt-%) |
| Relative density | - - - - - - - | approx. 99.85 % |
| Density | - - - - - - - | 2.67 g/cm3 |
| Mechanical Properties of parts | Test Method | As Built | Heat Treated [5] |
| Tensile strength [2] in horizontal direction (XY) |
ISO 6892-1:2009(B) Annex D |
460 ± 20 MPa 66.7 ± 2.9 ksi |
345 ± 10 MPa 50.0 ± 1.5 ksi |
| Tensile strength [2] in vertical direction (Z) |
ISO 6892-1:2009(B) Annex D |
460 ± 20 MPa 66.7 ± 2.9 ksi |
350 ± 10 MPa 50.8 ± 1.5 ksi |
| Yield strength (Rp 0.2 %) [2] in horizontal direction (XY) |
ISO 6892-1:2009(B) Annex D |
270 ± 10 MPa 39.2 ± 1.5 ksi |
230 ± 15 MPa 33.4 ± 2.2 ksi |
| Yield strength (Rp 0.2 %) [2] in vertical direction (Z) |
ISO 6892-1:2009(B) Annex D |
240 ± 10 MPa 34.8 ± 1.5 ksi |
230 ± 15 MPa 33.4 ± 2.2 ksi |
| Modulus of elasticity in horizontal direction (XY) | - - - - - - - |
75 ± 10 GPa 10.9 ± 0.7 Msi |
70 ± 10 GPa 10.2 ± 0.7 Msi |
| Modulus of elasticity in vertical direction (Z) | - - - - - - - |
70 ± 10 GPa 10.2 ± 0.7 Msi |
60 ± 10 GPa 8.7 ± 0.7 Msi |
| Elongation at break [2] in horizontal direction (XY) |
ISO 6892-1:2009(B) Annex D |
(9 ± 2) % | 12 ± 2 % |
| Elongation at break [2] in vertical direction (Z) |
ISO 6892-1:2009(B) Annex D |
(6 ± 2) % | 11 ± 2 % |
| Hardness [3] | DIN EN ISO 6506-1 | approx. 119 ± 5 HBW | - - - - - - - |
| Fatigue strength [4] in vertical direction (Z) | - - - - - - - |
appr. 97 ± 7 MPa appr. 14.1 ± 1.0 ksi |
- - - - - - - |
| Thermal properties of parts | Test Method | As Built | Heat Treated [5] |
| Thermal conductivity at 20 °C in horizontal direction (XY) | - - - - - - - | approx. 103 ± 5 W/m °C | approx. 173 ± 10 W/m °C |
| Thermal conductivity at 20 °C in vertical direction (Z) | - - - - - - - | approx. 119 ± 5 W/m °C | approx. 173 ± 10 W/m °C |
| Specific heat capacity in horizontal direction (XY) | - - - - - - - | approx. 920 ± 50 J/kg °C | approx. 890 ± 50 J/kg °C |
| Specific heat capacity in vertical direction (Z)) | - - - - - - - | approx. 910 ± 50 J/kg °C | approx. 890 ± 50 J/kg °C |