Materials / Compare
DMLS AlSi10Mg Aluminum vs. Titanium
Compare DMLS AlSi10Mg Aluminum vs. Titanium 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 | 885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset |
| Ultimate tensile strength | 450MPasourcetypical, as manufactured, horizontal | 940MPasourcetypical, plate, annealed |
| Elongation at break | 10.2%sourcetypical at break, as manufactured, horizontal | 16%sourcetypical, in 2 in., plate annealed |
| Young's modulus (stiffness) | 72GPasourcesame material and process, different machine maker: Renishaw RenAM 500, 30 µm, as built, horizontal (XY) | 107–122GPasourcetypical range, 20 °C |
| Density | 2,670kg/m³sourcetypical part density (ISO 3369), EOS M 290, AlSi10Mg_030_FlexM291 (30 µm) | 4,430kg/m³sourcenominal |
| Strength to weight | 101kN·m/kg | 200kN·m/kg1.98x higher |
| Stiffness to weight | 27MN·m/kg4% higher | 25.8MN·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) | 0.342sourcemean of TIMET measurements |
| Shear modulus | 27.1GPa | 42.7GPa1.58x stiffer in shear |
| Bulk modulus | 70.6GPa | 121GPa |
| Speed of sound | 5,193m/s | 5,084m/s |
| Thermal | ||
| Thermal conductivity | 110W/m·Ksourcetypical, as manufactured, horizontal (ISO 22007-2) | 6.6W/m·Ksourcetypical, 20 °C, mill annealed |
| Thermal expansion | 20µm/m·Ksourcemean 25-100 °C, ASTM E228 | 9µm/m·Ksourcetypical, mean 0-100 °C |
| 100 mm part over a 50 °C swing | 100µm growth | 45µm growth2.22x less |
| Specific heat | 963J/kg·Ksourcebase material: cast Al-Si-Mg alloy 359.0 (MIL-HDBK-5J), at 100 °C | 580J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 42.8mm²/s16.7x faster | 2.57mm²/s |
| Thermal shock resistance | 13,819W/m3.71x more resistant | 3,730W/m |
| Melting point | not sourced | 1,630–1,650°Csourcemelting range |
| Max service temperature | not sourced | 400°Csourceupper recommended use temperature |
| 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 | TIMETAL 6-4 (Ti-6Al-4V Grade 5) annealed plate typical (TIMET properties manual) + TIMET datasheet TMC-0150 physical properties |
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 Titanium?
Titanium is stronger: its yield strength is 885 MPa against 270 MPa for DMLS AlSi10Mg Aluminum (3.28x).
Which is lighter, DMLS AlSi10Mg Aluminum or Titanium?
DMLS AlSi10Mg Aluminum is lighter: 2,670 kg/m³ against 4,430 kg/m³ for Titanium.
Which is stiffer, DMLS AlSi10Mg Aluminum or Titanium?
Titanium is stiffer: Young's modulus 115 GPa against 72 GPa for DMLS AlSi10Mg Aluminum, so the same part in Titanium deflects less under the same load.
Which is lighter for the same job, DMLS AlSi10Mg Aluminum or Titanium?
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; Titanium is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | DMLS AlSi10Mg Aluminum | Titanium |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 4% heavier |
| Stiff beam (bending) | lighter | 32% heavier |
| Stiff panel or plate | lighter | 42% heavier |
| Strong rod or tie | 1.98x heavier | lighter |
| Strong beam | 33% heavier | lighter |
| Strong panel or plate | 9% heavier | lighter |
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 Titanium?
DMLS AlSi10Mg Aluminum conducts heat better: 110 W/m·K against 6.6 W/m·K for Titanium.
Which expands less with temperature?
Titanium expands less: 9 µm/m·K against 20 µm/m·K for DMLS AlSi10Mg Aluminum.