Materials / Compare
DMLS AlSi10Mg Aluminum vs. Zinc Zamak 3
Compare DMLS AlSi10Mg Aluminum vs. Zinc Zamak 3 strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 270MPasourcetypical, as manufactured, horizontal | 221MPasourcetypical |
| Ultimate tensile strength | 450MPasourcetypical, as manufactured, horizontal | 283MPasourcetypical |
| Elongation at break | 10.2%sourcetypical at break, as manufactured, horizontal | 10%sourcetypical, in 2 in. |
| Young's modulus (stiffness) | 72GPasourcesame material and process, different machine maker: Renishaw RenAM 500, 30 µm, as built, horizontal (XY) | 85.5GPasourcetypical |
| Density | 2,670kg/m³sourcetypical part density (ISO 3369), EOS M 290, AlSi10Mg_030_FlexM291 (30 µm) | 6,600kg/m³sourcetypical |
| Strength to weight | 101kN·m/kg3.02x higher | 33.5kN·m/kg |
| Stiffness to weight | 27MN·m/kg2.08x higher | 13MN·m/kg |
| Poisson's ratio | 0.33sourcebase material: cast Al-Si-Mg alloy 359.0 (Al-9Si-0.6Mg, closest MIL-HDBK-5J alloy to AlSi10Mg / EN AC-43000) | 0.27sourcetypical, Zamak 3 hot-chamber die cast |
| Shear modulus | 27.1GPa | 33.7GPa24% stiffer in shear |
| Bulk modulus | 70.6GPa | 62GPa |
| Speed of sound | 5,193m/s | 3,599m/s |
| Thermal | ||
| Thermal conductivity | 110W/m·Ksourcetypical, as manufactured, horizontal (ISO 22007-2) | 113W/m·Ksourcetypical |
| Thermal expansion | 20µm/m·Ksourcemean 25-100 °C, ASTM E228 | 27.4µm/m·Ksourcetypical |
| 100 mm part over a 50 °C swing | 100µm growth37% less | 137µm growth |
| Specific heat | 963J/kg·Ksourcebase material: cast Al-Si-Mg alloy 359.0 (MIL-HDBK-5J), at 100 °C | 419J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | 42.8mm²/s5% faster | 40.9mm²/s |
| Thermal shock resistance | 13,819W/m1.78x more resistant | 7,782W/m |
| Melting point | not sourced | 381–387°Csourcemelting range |
| Values for | EOS Aluminium AlSi10Mg (powder 9011-0024), EOS M 290 | 30 µm process (AlSi10Mg_FlexM291 2.01), as manufactured, horizontal; machined (turned) specimens, ISO 6892-1 B10 | Zamak 3 (ASTM B86 die cast), Nathan Trotter (zinc alloy producer) technical data sheet, typical values |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
DMLS AlSi10Mg Aluminum is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is DMLS AlSi10Mg Aluminum stronger than Zinc Zamak 3?
DMLS AlSi10Mg Aluminum is stronger: its yield strength is 270 MPa against 221 MPa for Zinc Zamak 3 (22%).
Which is lighter, DMLS AlSi10Mg Aluminum or Zinc Zamak 3?
DMLS AlSi10Mg Aluminum is lighter: 2,670 kg/m³ against 6,600 kg/m³ for Zinc Zamak 3.
Which is stiffer, DMLS AlSi10Mg Aluminum or Zinc Zamak 3?
Zinc Zamak 3 is stiffer: Young's modulus 85.5 GPa against 72 GPa for DMLS AlSi10Mg Aluminum, so the same part in Zinc Zamak 3 deflects less under the same load.
Which is lighter for the same job, DMLS AlSi10Mg Aluminum or Zinc Zamak 3?
For the same stiffness or strength: DMLS AlSi10Mg Aluminum is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | DMLS AlSi10Mg Aluminum | Zinc Zamak 3 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2.08x heavier |
| Stiff beam (bending) | lighter | 2.27x heavier |
| Stiff panel or plate | lighter | 2.33x heavier |
| Strong rod or tie | lighter | 3.02x heavier |
| Strong beam | lighter | 2.82x heavier |
| Strong panel or plate | lighter | 2.73x heavier |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, DMLS AlSi10Mg Aluminum or Zinc Zamak 3?
Zinc Zamak 3 conducts heat better: 113 W/m·K against 110 W/m·K for DMLS AlSi10Mg Aluminum.
Which expands less with temperature?
DMLS AlSi10Mg Aluminum expands less: 20 µm/m·K against 27.4 µm/m·K for Zinc Zamak 3.