Materials / Compare
DMLS AlSi10Mg Aluminum vs. Brass C260
Compare DMLS AlSi10Mg Aluminum vs. Brass C260 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 | 345MPasourcenominal, strip/flat, 0.5% extension (not 0.2% offset) |
| Ultimate tensile strength | 450MPasourcetypical, as manufactured, horizontal | 427MPasourcenominal, strip/flat |
| Elongation at break | 10.2%sourcetypical at break, as manufactured, horizontal | 23%sourcenominal, in 2.0 in., strip/flat |
| Young's modulus (stiffness) | 72GPasourcesame material and process, different machine maker: Renishaw RenAM 500, 30 µm, as built, horizontal (XY) | 110GPasourcetypical, temper-independent |
| Density | 2,670kg/m³sourcetypical part density (ISO 3369), EOS M 290, AlSi10Mg_030_FlexM291 (30 µm) | 8,525kg/m³sourcenominal |
| Strength to weight | 101kN·m/kg2.5x higher | 40.5kN·m/kg |
| Stiffness to weight | 27MN·m/kg2.08x higher | 12.9MN·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) | 0.34sourcereference value at room temperature (Wieland-M30 = CuZn30 = C26000, rolled products) |
| Shear modulus | 27.1GPa | 41.2GPa1.52x stiffer in shear |
| Bulk modulus | 70.6GPa | 115GPa |
| Speed of sound | 5,193m/s | 3,597m/s |
| Thermal | ||
| Thermal conductivity | 110W/m·Ksourcetypical, as manufactured, horizontal (ISO 22007-2) | 121W/m·Ksourcetypical, 20 °C |
| Thermal expansion | 20µm/m·Ksourcemean 25-100 °C, ASTM E228 | 20µm/m·Ksourcetypical, mean 20-300 °C |
| 100 mm part over a 50 °C swing | 100µm growth | 100µm growth |
| Specific heat | 963J/kg·Ksourcebase material: cast Al-Si-Mg alloy 359.0 (MIL-HDBK-5J), at 100 °C | 377J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 42.8mm²/s13% faster | 37.7mm²/s |
| Thermal shock resistance | 13,819W/m10% more resistant | 12,510W/m |
| Melting point | not sourced | 916–954°Csourcesolidus-liquidus |
| 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 | C26000 cartridge brass, H02 half hard flat/strip: CDA Electronic Connector Design Guide (mechanical) + CDA alloy page (physical) |
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 Brass C260?
Brass C260 is stronger: its yield strength is 345 MPa against 270 MPa for DMLS AlSi10Mg Aluminum (28%).
Which is lighter, DMLS AlSi10Mg Aluminum or Brass C260?
DMLS AlSi10Mg Aluminum is lighter: 2,670 kg/m³ against 8,525 kg/m³ for Brass C260.
Which is stiffer, DMLS AlSi10Mg Aluminum or Brass C260?
Brass C260 is stiffer: Young's modulus 110 GPa against 72 GPa for DMLS AlSi10Mg Aluminum, so the same part in Brass C260 deflects less under the same load.
Which is lighter for the same job, DMLS AlSi10Mg Aluminum or Brass C260?
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 | Brass C260 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2.08x heavier |
| Stiff beam (bending) | lighter | 2.58x heavier |
| Stiff panel or plate | lighter | 2.77x heavier |
| Strong rod or tie | lighter | 2.5x heavier |
| Strong beam | lighter | 2.71x heavier |
| Strong panel or plate | lighter | 2.82x 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 Brass C260?
Brass C260 conducts heat better: 121 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 20 µm/m·K for Brass C260.