Materials / Compare
Aluminum ADC12 vs. Plastic ABS (bulk/injection)
Compare Aluminum ADC12 vs. Plastic ABS (bulk/injection) 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) | 45MPasourcetypical, tensile stress at yield 23 °C |
| Ultimate tensile strength | 345MPasourceone test result, as cast, ASTM tensile bar (Daiki) | not sourced |
| Flexural strength | not sourced | 65MPasourcetypical, 23 °C |
| Elongation at break | 2.3%sourceone test result, as cast, ASTM tensile bar (Daiki) | 10%sourcenominal strain at break, 23 °C |
| Young's modulus (stiffness) | 79.8GPasourcestandard value (S.S.Aluminum) | 2.3GPasourcetypical |
| Density | 2,680kg/m³sourcemeasured (Daiki) | 1,040kg/m³sourcetypical |
| Strength to weight | 55.6kN·m/kg28% higher | 43.3kN·m/kg |
| Stiffness to weight | 29.8MN·m/kg13.5x higher | 2.21MN·m/kg |
| Poisson's ratio | not sourced | 0.39sourcetypical, ABS family (Covestro Part and Mold Design guide, Table 3-1) |
| Shear modulus | not sourced | 0.827GPa |
| Bulk modulus | not sourced | 3.48GPa |
| Speed of sound | 5,457m/s | 1,487m/s |
| Thermal | ||
| Thermal conductivity | 125W/m·Ksourcemeasured on specimens cut from a 50 x 100 x 5 mm flat die casting (Daiki) | 0.17W/m·Ksourcetypical |
| Thermal expansion | 21µm/m·Ksourcemeasured, temperature range not stated (Daiki) | 80–110µm/m·Ksourcerange |
| 100 mm part over a 50 °C swing | 105µm growth4.52x less | 475µm growth |
| Specific heat | 911J/kg·Ksourcemeasured (Daiki) | not sourced |
| Heats up and cools (diffusivity) | 51.2mm²/s | not sourced |
| Thermal shock resistance | not sourced | 21.4W/m |
| Melting point | 515–582°Csourcesolidus-liquidus (Daiki) | not sourced |
| Max service temperature | not sourced | 94°CsourceHDT 1.8 MPa (annealed 4 h/80 °C) |
| 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. | INEOS Styrolution Terluran GP-22 general-purpose injection-molding ABS, ISO typical values (TDS revision 08/01/2022) |
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 Plastic ABS (bulk/injection)?
Aluminum ADC12 is stronger: its yield strength is 149 MPa against 45 MPa for Plastic ABS (bulk/injection) (3.31x).
Which is lighter, Aluminum ADC12 or Plastic ABS (bulk/injection)?
Plastic ABS (bulk/injection) is lighter: 1,040 kg/m³ against 2,680 kg/m³ for Aluminum ADC12.
Which is stiffer, Aluminum ADC12 or Plastic ABS (bulk/injection)?
Aluminum ADC12 is stiffer: Young's modulus 79.8 GPa against 2.3 GPa for Plastic ABS (bulk/injection), so the same part in Aluminum ADC12 deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or Plastic ABS (bulk/injection)?
For the same stiffness or strength: Aluminum ADC12 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie; Plastic ABS (bulk/injection) is lighter for a strong beam, strong panel or plate.
| Part that must be | Aluminum ADC12 | Plastic ABS (bulk/injection) |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 13.5x heavier |
| Stiff beam (bending) | lighter | 2.29x heavier |
| Stiff panel or plate | lighter | 27% heavier |
| Strong rod or tie | lighter | 28% heavier |
| Strong beam | 16% heavier | lighter |
| Strong panel or plate | 42% 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 Plastic ABS (bulk/injection)?
Aluminum ADC12 conducts heat better: 125 W/m·K against 0.17 W/m·K for Plastic ABS (bulk/injection).
Which expands less with temperature?
Aluminum ADC12 expands less: 21 µm/m·K against 95 µm/m·K for Plastic ABS (bulk/injection).
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