Materials / Compare
Aluminum ADC12 vs. Titanium
Compare Aluminum ADC12 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 | 149MPasourceone test result, 0.2% proof stress, as cast, ASTM tensile bar (Daiki) | 885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset |
| Ultimate tensile strength | 345MPasourceone test result, as cast, ASTM tensile bar (Daiki) | 940MPasourcetypical, plate, annealed |
| Elongation at break | 2.3%sourceone test result, as cast, ASTM tensile bar (Daiki) | 16%sourcetypical, in 2 in., plate annealed |
| Young's modulus (stiffness) | 79.8GPasourcestandard value (S.S.Aluminum) | 107–122GPasourcetypical range, 20 °C |
| Density | 2,680kg/m³sourcemeasured (Daiki) | 4,430kg/m³sourcenominal |
| Strength to weight | 55.6kN·m/kg | 200kN·m/kg3.59x higher |
| Stiffness to weight | 29.8MN·m/kg15% higher | 25.8MN·m/kg |
| Poisson's ratio | not sourced | 0.342sourcemean of TIMET measurements |
| Shear modulus | not sourced | 42.7GPa |
| Bulk modulus | not sourced | 121GPa |
| Speed of sound | 5,457m/s | 5,084m/s |
| Thermal | ||
| Thermal conductivity | 125W/m·Ksourcemeasured on specimens cut from a 50 x 100 x 5 mm flat die casting (Daiki) | 6.6W/m·Ksourcetypical, 20 °C, mill annealed |
| Thermal expansion | 21µm/m·Ksourcemeasured, temperature range not stated (Daiki) | 9µm/m·Ksourcetypical, mean 0-100 °C |
| 100 mm part over a 50 °C swing | 105µm growth | 45µm growth2.33x less |
| Specific heat | 911J/kg·Ksourcemeasured (Daiki) | 580J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 51.2mm²/s19.9x faster | 2.57mm²/s |
| Thermal shock resistance | not sourced | 3,730W/m |
| Melting point | 515–582°Csourcesolidus-liquidus (Daiki) | 1,630–1,650°Csourcemelting range |
| Max service temperature | not sourced | 400°Csourceupper recommended use temperature |
| Values for | JIS ADC12 (Al-Si-Cu, about A383 / EN AC-46100) high-pressure die-casting alloy, as cast; physical properties from Daiki Aluminium Industry (ADC12 ingot producer) measured values; modulus from S.S.Aluminum (ADC12 ingot producer) standard values. | 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.
Questions
Is Aluminum ADC12 stronger than Titanium?
Titanium is stronger: its yield strength is 885 MPa against 149 MPa for Aluminum ADC12 (5.94x).
Which is lighter, Aluminum ADC12 or Titanium?
Aluminum ADC12 is lighter: 2,680 kg/m³ against 4,430 kg/m³ for Titanium.
Which is stiffer, Aluminum ADC12 or Titanium?
Titanium is stiffer: Young's modulus 115 GPa against 79.8 GPa for Aluminum ADC12, so the same part in Titanium deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or Titanium?
For the same stiffness or strength: Aluminum ADC12 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 | Aluminum ADC12 | Titanium |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 15% heavier |
| Stiff beam (bending) | lighter | 38% heavier |
| Stiff panel or plate | lighter | 47% heavier |
| Strong rod or tie | 3.59x heavier | lighter |
| Strong beam | 1.98x heavier | lighter |
| Strong panel or plate | 47% 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, Aluminum ADC12 or Titanium?
Aluminum ADC12 conducts heat better: 125 W/m·K against 6.6 W/m·K for Titanium.
Which expands less with temperature?
Titanium expands less: 9 µm/m·K against 21 µm/m·K for Aluminum ADC12.