Materials / Compare
Aluminum ADC12 vs. Plastic PPS GF40
Compare Aluminum ADC12 vs. Plastic PPS GF40 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) | not given (tensile used) |
| Ultimate tensile strength | 345MPasourceone test result, as cast, ASTM tensile bar (Daiki) | 195MPasourcetensile strength, 5 mm/min |
| Flexural strength | not sourced | 285MPasourceflexural strength at break |
| Elongation at break | 2.3%sourceone test result, as cast, ASTM tensile bar (Daiki) | 1.9%sourcestrain at break, 5 mm/min |
| Young's modulus (stiffness) | 79.8GPasourcestandard value (S.S.Aluminum) | 14.7GPasourcetypical, 1 mm/min |
| Density | 2,680kg/m³sourcemeasured (Daiki) | 1,650kg/m³sourcetypical |
| Strength to weight | 55.6kN·m/kg | 118kN·m/kg2.13x higher |
| Stiffness to weight | 29.8MN·m/kg3.34x higher | 8.91MN·m/kg |
| Poisson's ratio | not sourced | 0.35sourceglass-reinforced Fortron PPS (class value, not grade-specific) |
| Shear modulus | not sourced | 5.44GPa |
| Bulk modulus | not sourced | 16.3GPa |
| Speed of sound | 5,457m/s | 2,985m/s |
| Thermal | ||
| Thermal conductivity | 125W/m·Ksourcemeasured on specimens cut from a 50 x 100 x 5 mm flat die casting (Daiki) | 0.2W/m·Ksource40% glass-reinforced Fortron, 25 °C (not grade-specific) |
| Thermal expansion | 21µm/m·Ksourcemeasured, temperature range not stated (Daiki) | 12µm/m·Ksourceparallel (flow), mean -50 to 90 °C |
| 100 mm part over a 50 °C swing | 105µm growth | 60µm growth1.75x less |
| Specific heat | 911J/kg·Ksourcemeasured (Daiki) | not sourced |
| Heats up and cools (diffusivity) | 51.2mm²/s | not sourced |
| Thermal shock resistance | not sourced | 144W/m |
| Melting point | 515–582°Csourcesolidus-liquidus (Daiki) | 280°CsourceDSC, 10 °C/min |
| Glass transition | not sourced | 90°CsourceDSC, 10 °C/min |
| Max service temperature | not sourced | 270°CsourceHDT 1.8 MPa |
| 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. | Celanese Fortron 1140L4 (PPS, 40% glass fibre), injection moulding; FORTRON PPS Short-Term Properties Guide (PPS-012, 2016); thermal conductivity and Poisson for 40% glass-reinforced Fortron from the Fortron PPS Design Manual (PPS-050, 2013). |
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 PPS GF40?
Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against yield strength 149 MPa for Aluminum ADC12 (31%).
Which is lighter, Aluminum ADC12 or Plastic PPS GF40?
Plastic PPS GF40 is lighter: 1,650 kg/m³ against 2,680 kg/m³ for Aluminum ADC12.
Which is stiffer, Aluminum ADC12 or Plastic PPS GF40?
Aluminum ADC12 is stiffer: Young's modulus 79.8 GPa against 14.7 GPa for Plastic PPS GF40, so the same part in Aluminum ADC12 deflects less under the same load.
Which is lighter for the same job, Aluminum ADC12 or Plastic PPS GF40?
For the same stiffness or strength: Aluminum ADC12 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; Plastic PPS GF40 is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum ADC12 | Plastic PPS GF40 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 3.34x heavier |
| Stiff beam (bending) | lighter | 43% heavier |
| Stiff panel or plate | lighter | 8% heavier |
| Strong rod or tie | 2.13x heavier | lighter |
| Strong beam | 1.94x heavier | lighter |
| Strong panel or plate | 1.86x 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 PPS GF40?
Aluminum ADC12 conducts heat better: 125 W/m·K against 0.2 W/m·K for Plastic PPS GF40.
Which expands less with temperature?
Plastic PPS GF40 expands less: 12 µm/m·K against 21 µm/m·K for Aluminum ADC12.