Materials / Compare
Aluminum 7050-T7451 vs. Ceramic Alumina 96%
Compare Aluminum 7050-T7451 vs. Ceramic Alumina 96% 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 | 469MPasourcetypical, longitudinal, 0.2% offset | not given (tensile used) |
| Ultimate tensile strength | 524MPasourcetypical, longitudinal | 221MPasourcetypical tensile strength, 25 °C (ACMA Test #4) |
| Compressive strength | not sourced | 2,068MPasourcetypical, 20 °C (ASTM-C773) |
| Flexural strength | not sourced | 358MPasourceflexural strength (MOR), 20 °C (ASTM-F417) |
| Elongation at break | 11%sourcetypical, longitudinal | not sourced |
| Young's modulus (stiffness) | 70.3GPasourcetypical | 303GPasourcetypical, 20 °C (ASTM-C848) |
| Density | 2,830kg/m³sourcenominal | 3,720kg/m³sourcetypical (ASTM-C20) |
| Strength to weight | 166kN·m/kg2.79x higher | 59.4kN·m/kg |
| Stiffness to weight | 24.8MN·m/kg | 81.5MN·m/kg3.28x higher |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.21sourcetypical, 20 °C (ASTM-C848) |
| Shear modulus | 26.4GPa | 125GPa4.74x stiffer in shear |
| Bulk modulus | 68.9GPa | 174GPa |
| Speed of sound | 4,984m/s | 9,025m/s |
| Thermal | ||
| Thermal conductivity | 157W/m·Ksourcetypical, 20 °C | 24.7W/m·Ksourcetypical, 20 °C (ASTM-C408) |
| Thermal expansion | 23.5µm/m·Ksourcetypical, mean 20-100 °C | 8.2µm/m·Ksourcemean, 25-1000 °C (ASTM-C372) |
| 100 mm part over a 50 °C swing | 118µm growth | 41µm growth2.87x less |
| Specific heat | 860J/kg·Ksourcetypical, at 100 °C | 880J/kg·Ksourcetypical, 100 °C (ASTM-E1269) |
| Heats up and cools (diffusivity) | 64.5mm²/s8.55x faster | 7.55mm²/s |
| Thermal shock resistance | 29,862W/m17.2x more resistant | 1,736W/m |
| Melting point | 524–635°Csourcemelting range | not sourced |
| Values for | 7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5J | 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. |
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 7050-T7451 stronger than Ceramic Alumina 96%?
Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against tensile strength 221 MPa for Ceramic Alumina 96% (2.12x).
Which is lighter, Aluminum 7050-T7451 or Ceramic Alumina 96%?
Aluminum 7050-T7451 is lighter: 2,830 kg/m³ against 3,720 kg/m³ for Ceramic Alumina 96%.
Which is stiffer, Aluminum 7050-T7451 or Ceramic Alumina 96%?
Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 70.3 GPa for Aluminum 7050-T7451, so the same part in Ceramic Alumina 96% deflects less under the same load.
Which is lighter for the same job, Aluminum 7050-T7451 or Ceramic Alumina 96%?
For the same stiffness or strength: Aluminum 7050-T7451 is lighter for a strong rod or tie, strong beam, strong panel or plate; Ceramic Alumina 96% is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate.
| Part that must be | Aluminum 7050-T7451 | Ceramic Alumina 96% |
|---|---|---|
| Stiff rod or tie (tension) | 3.28x heavier | lighter |
| Stiff beam (bending) | 1.58x heavier | lighter |
| Stiff panel or plate | 24% heavier | lighter |
| Strong rod or tie | lighter | 2.79x heavier |
| Strong beam | lighter | 2.17x heavier |
| Strong panel or plate | lighter | 1.91x 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, Aluminum 7050-T7451 or Ceramic Alumina 96%?
Aluminum 7050-T7451 conducts heat better: 157 W/m·K against 24.7 W/m·K for Ceramic Alumina 96%.
Which expands less with temperature?
Ceramic Alumina 96% expands less: 8.2 µm/m·K against 23.5 µm/m·K for Aluminum 7050-T7451.