Materials / Compare
Ceramic Alumina 96% vs. Titanium Ti-6Al-4V
Compare Ceramic Alumina 96% vs. Titanium Ti-6Al-4V strength, stiffness, weight and thermal properties.
| Try it on a partA sample part to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | not given (tensile used) | 885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset |
| Ultimate tensile strength | 221MPasourcetypical tensile strength, 25 °C (ACMA Test #4) | 940MPasourcetypical, plate, annealed |
| Compressive strength | 2,068MPasourcetypical, 20 °C (ASTM-C773) | not sourced |
| Flexural strength | 358MPasourceflexural strength (MOR), 20 °C (ASTM-F417) | not sourced |
| Elongation at break | not sourced | 16%sourcetypical, in 2 in., plate annealed |
| Young's modulus (stiffness) | 303GPasourcetypical, 20 °C (ASTM-C848) | 107–122GPasourcetypical range, 20 °C |
| Density | 3,720kg/m³sourcetypical (ASTM-C20) | 4,430kg/m³sourcenominal |
| Strength to weight | 59.4kN·m/kg | 200kN·m/kg3.36x higher |
| Stiffness to weight | 81.5MN·m/kg3.15x higher | 25.8MN·m/kg |
| Poisson's ratio | 0.21sourcetypical, 20 °C (ASTM-C848) | 0.342sourcemean of TIMET measurements |
| Shear modulus | 125GPa2.93x stiffer in shear | 42.7GPa |
| Bulk modulus | 174GPa | 121GPa |
| Speed of sound | 9,025m/s | 5,084m/s |
| Thermal | ||
| Thermal conductivity | 24.7W/m·Ksourcetypical, 20 °C (ASTM-C408) | 6.6W/m·Ksourcetypical, 20 °C, mill annealed |
| Thermal expansion | 8.2µm/m·Ksourcemean, 25-1000 °C (ASTM-C372) | 9µm/m·Ksourcetypical, mean 0-100 °C |
| 100 mm part over a 50 °C swing | 41µm growth10% less | 45µm growth |
| Specific heat | 880J/kg·Ksourcetypical, 100 °C (ASTM-E1269) | 580J/kg·Ksourcetypical, 20 °C |
| Heats up and cools (diffusivity) | 7.55mm²/s2.94x faster | 2.57mm²/s |
| Thermal shock resistance | 1,736W/m | 3,730W/m2.15x more resistant |
| Melting point | not sourced | 1,630–1,650°Csourcemelting range |
| Max service temperature | not sourced | 400°Csourceupper recommended use temperature |
| Values for | CoorsTek AD-96, nominal 96% Al2O3 sintered alumina, typical values; CoorsTek "Ceramic Seal Material Properties" (© 2018, 01899 F). AD-96 is the general 96% grade, not the ADS-96R substrate grade. | 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 Ceramic Alumina 96% stronger than Titanium Ti-6Al-4V?
Titanium Ti-6Al-4V is stronger: its yield strength is 885 MPa against tensile strength 221 MPa for Ceramic Alumina 96% (4x).
Which is lighter, Ceramic Alumina 96% or Titanium Ti-6Al-4V?
Ceramic Alumina 96% is lighter: 3,720 kg/m³ against 4,430 kg/m³ for Titanium Ti-6Al-4V.
Which is stiffer, Ceramic Alumina 96% or Titanium Ti-6Al-4V?
Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 115 GPa for Titanium Ti-6Al-4V, so the same part in Ceramic Alumina 96% deflects less under the same load.
Which is lighter for the same job, Ceramic Alumina 96% or Titanium Ti-6Al-4V?
For the same stiffness or strength: Ceramic Alumina 96% 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 | Ceramic Alumina 96% | Titanium Ti-6Al-4V |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 3.15x heavier |
| Stiff beam (bending) | lighter | 1.94x heavier |
| Stiff panel or plate | lighter | 1.65x heavier |
| Strong rod or tie | 3.36x heavier | lighter |
| Strong beam | 2.12x heavier | lighter |
| Strong panel or plate | 1.68x 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, Ceramic Alumina 96% or Titanium Ti-6Al-4V?
Ceramic Alumina 96% conducts heat better: 24.7 W/m·K against 6.6 W/m·K for Titanium Ti-6Al-4V.
Which expands less with temperature?
Ceramic Alumina 96% expands less: 8.2 µm/m·K against 9 µm/m·K for Titanium Ti-6Al-4V.
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