Materials / Compare
Aluminum ADC12 vs. Titanium Ti-6Al-4V
Compare Aluminum ADC12 vs. Titanium Ti-6Al-4V 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 Ti-6Al-4V?
Titanium Ti-6Al-4V is stronger: its yield strength is 885 MPa against 149 MPa for Aluminum ADC12 (5.94x).
Which is lighter, Aluminum ADC12 or Titanium Ti-6Al-4V?
Aluminum ADC12 is lighter: 2,680 kg/m³ against 4,430 kg/m³ for Titanium Ti-6Al-4V.
Which is stiffer, Aluminum ADC12 or Titanium Ti-6Al-4V?
Titanium Ti-6Al-4V is stiffer: Young's modulus 115 GPa against 79.8 GPa for Aluminum ADC12, so the same part in Titanium Ti-6Al-4V deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or Titanium Ti-6Al-4V?
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 Ti-6Al-4V is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum ADC12 | Titanium Ti-6Al-4V |
|---|---|---|
| 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 Ti-6Al-4V?
Aluminum ADC12 conducts heat better: 125 W/m·K against 6.6 W/m·K for Titanium Ti-6Al-4V.
Which expands less with temperature?
Titanium Ti-6Al-4V expands less: 9 µm/m·K against 21 µm/m·K for Aluminum ADC12.