Aluminium (AlSi10Mg)


Aluminium (AlSi10Mg)

Aluminium AlSi10Mg is a typical casting alloy with good casting properties and it’s typically used for cast parts with thin walls and complex geometry. It offers good strength, hardness and dynamic properties and is therefore also used for parts subject to high loads. Parts in Aluminium AlSi10Mg are ideal for applications which require a combination of good thermal properties and low weight.The part can be machined, spark-eroded, welded, micro shot-peened, polished and coated if required.
Conventionally cast components in this type of aluminium alloy are often heat treated to improve the mechanical properties, for example using the T6 cycle of solution annealing, quenching and age hardening.

The laser-sintering process is characterized by extremely rapid melting and re-solidification. This produces a metallurgy and corresponding mechanical properties in the as-built condition which is similar to T6 heat-treated cast parts.

Mechanical Properties Test Method As Built Heat Treated
Tensile strength ISO 6892-1:2009(B) Annex D 460 ± 20 MPa 350 ± 10 MPa
Yield Strength (Rp 0.2%) ISO 6892-1:2009(B) Annex D 260 ± 20 MPa 230 ± 15 MPa
Elongation at Break ISO 6892-1:2009(B) Annex D 6 ± 2% 6 ± 2%
Young’s modulus - 75 ± 10 GPa 75 ± 10 GPa
Hardness DIN EN ISO 6506-1 120 ± 5 HBW 120 ± 5 HBW
Thermal Properties Test Method As Built Heat Treated
Thermal conductivity ASTM E1461-13 110 ± 5 W/m°C 170 ± 5 W/m°C
Specific heat capacity ASTM E1461-13 910 ± 50 J/Kg°C 890 ± 50 J/Kg°C
Chemical Composition and Physical Properties    
Chemical composition Al
Si
Fe
Cu
Mn
Mg
Ni
Zn
Pb
Sn
Ti
Balance
9 - 11%
0 - 0,055%
0 - 0,1%
0 - 0,45 %
0,20 - 0,45 %
0 - 0,05 %
0 - 0,10 %
0 - 0,05 %
0 - 0,05 %
0 - 0,15 %
Physical Properties Relative density Approx. 99,85 %
  Density 2,67 g/cm3
Heat Treatment Temperature Time (h) Atmosphere
Stress Relief RT - 240°C 1 Inert
  240°C 6 Inert
  240°C - RT - Inert