Materials / Compare
Aluminum ADC12 vs. Ceramic Alumina 96%
Compare Aluminum ADC12 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 | 149MPasourceone test result, 0.2% proof stress, as cast, ASTM tensile bar (Daiki) | not given (tensile used) |
| Ultimate tensile strength | 345MPasourceone test result, as cast, ASTM tensile bar (Daiki) | 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 | 2.3%sourceone test result, as cast, ASTM tensile bar (Daiki) | not sourced |
| Young's modulus (stiffness) | 79.8GPasourcestandard value (S.S.Aluminum) | 303GPasourcetypical, 20 °C (ASTM-C848) |
| Density | 2,680kg/m³sourcemeasured (Daiki) | 3,720kg/m³sourcetypical (ASTM-C20) |
| Strength to weight | 55.6kN·m/kg | 59.4kN·m/kg7% higher |
| Stiffness to weight | 29.8MN·m/kg | 81.5MN·m/kg2.74x higher |
| Poisson's ratio | not sourced | 0.21sourcetypical, 20 °C (ASTM-C848) |
| Shear modulus | not sourced | 125GPa |
| Bulk modulus | not sourced | 174GPa |
| Speed of sound | 5,457m/s | 9,025m/s |
| Thermal | ||
| Thermal conductivity | 125W/m·Ksourcemeasured on specimens cut from a 50 x 100 x 5 mm flat die casting (Daiki) | 24.7W/m·Ksourcetypical, 20 °C (ASTM-C408) |
| Thermal expansion | 21µm/m·Ksourcemeasured, temperature range not stated (Daiki) | 8.2µm/m·Ksourcemean, 25-1000 °C (ASTM-C372) |
| 100 mm part over a 50 °C swing | 105µm growth | 41µm growth2.56x less |
| Specific heat | 911J/kg·Ksourcemeasured (Daiki) | 880J/kg·Ksourcetypical, 100 °C (ASTM-E1269) |
| Heats up and cools (diffusivity) | 51.2mm²/s6.79x faster | 7.55mm²/s |
| Thermal shock resistance | not sourced | 1,736W/m |
| Melting point | 515–582°Csourcesolidus-liquidus (Daiki) | not sourced |
| 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. | 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 ADC12 stronger than Ceramic Alumina 96%?
Ceramic Alumina 96% is stronger: its tensile strength is 221 MPa against yield strength 149 MPa for Aluminum ADC12 (48%).
Which is lighter, Aluminum ADC12 or Ceramic Alumina 96%?
Aluminum ADC12 is lighter: 2,680 kg/m³ against 3,720 kg/m³ for Ceramic Alumina 96%.
Which is stiffer, Aluminum ADC12 or Ceramic Alumina 96%?
Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 79.8 GPa for Aluminum ADC12, so the same part in Ceramic Alumina 96% deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or Ceramic Alumina 96%?
For the same stiffness or strength: Aluminum ADC12 is lighter for a 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, strong rod or tie.
| Part that must be | Aluminum ADC12 | Ceramic Alumina 96% |
|---|---|---|
| Stiff rod or tie (tension) | 2.74x heavier | lighter |
| Stiff beam (bending) | 40% heavier | lighter |
| Stiff panel or plate | 12% heavier | lighter |
| Strong rod or tie | 7% heavier | lighter |
| Strong beam | lighter | 7% heavier |
| Strong panel or plate | lighter | 14% 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 ADC12 or Ceramic Alumina 96%?
Aluminum ADC12 conducts heat better: 125 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 21 µm/m·K for Aluminum ADC12.