Materials / Compare
Copper C110 vs. Plastic POM/Acetal
Compare Copper C110 vs. Plastic POM/Acetal 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 | 69MPasourcetypical, 0.5% extension under load | 69MPasourcetypical (single ASTM D638 tensile strength) |
| Ultimate tensile strength | 221MPasourcetypical3.2x stronger | 69MPasourcetypical |
| Compressive strength | not sourced | 124MPasourcecompressive stress at 10% deformation |
| Flexural strength | not sourced | 99MPasourceflexural yield strength, typical |
| Elongation at break | 55%sourcetypical, 1 in. rod | 75%sourcetypical |
| Young's modulus (stiffness) | 117GPasourcetypical41.9x stiffer | 2.8GPasourcetypical |
| Density | 8,913kg/m³sourcenominal | 1,420kg/m³sourcetypical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties') |
| Strength to weight | 7.74kN·m/kg | 48.6kN·m/kg6.28x higher |
| Stiffness to weight | 13.1MN·m/kg6.67x higher | 1.97MN·m/kg |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-K32 = Cu-ETP = C11000, rolled products) | 0.35sourcetypical |
| Shear modulus | 43.7GPa42.2x stiffer in shear | 1.04GPa |
| Bulk modulus | 122GPa | 3.11GPa |
| Speed of sound | 3,626m/s | 1,404m/s |
| Thermal | ||
| Thermal conductivity | 391W/m·Ksourcetypical, 20 °C | 0.4W/m·Ksourcetypical |
| Thermal expansion | 16.9µm/m·Ksourcetypical, mean 20-100 °C | 122µm/m·Ksourcemean, 29 to 60 °C |
| 100 mm part over a 50 °C swing | 84.5µm growth7.22x less | 610µm growth |
| Specific heat | 385J/kg·Ksourcetypical, 20 °C | 1,465J/kg·Ksourceaverage -18 to 100 °C, Delrin acetal resins (not grade-specific) |
| Heats up and cools (diffusivity) | 114mm²/s592x faster | 0.192mm²/s |
| Thermal shock resistance | 8,992W/m171x more resistant | 52.5W/m |
| Melting point | 1,065–1,083°Csourcesolidus-liquidus | 175°Csourcecrystalline melting point |
| Max service temperature | not sourced | 125°CsourceHDT 1.8 MPa (annealed) |
| Values for | C11000 ETP copper, annealed to 0.050 mm grain size (OS050), 1 in. rod, copper.org typical values | DuPont Delrin 100 acetal homopolymer, Table 2 'Typical Properties of Delrin Acetal Resins' (ASTM methods), Delrin Design Guide Module III hosted on delrin.com |
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 Copper C110 stronger than Plastic POM/Acetal?
Copper C110 is stronger: its yield strength is 69 MPa against 69 MPa for Plastic POM/Acetal (0%).
Which is lighter, Copper C110 or Plastic POM/Acetal?
Plastic POM/Acetal is lighter: 1,420 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Copper C110 or Plastic POM/Acetal?
Copper C110 is stiffer: Young's modulus 117 GPa against 2.8 GPa for Plastic POM/Acetal, so the same part in Copper C110 deflects less under the same load.
Which is lighter for the same job, Copper C110 or Plastic POM/Acetal?
For the same stiffness or strength: Copper C110 is lighter for a stiff rod or tie (tension), stiff beam (bending); Plastic POM/Acetal is lighter for a stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Copper C110 | Plastic POM/Acetal |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 6.67x heavier |
| Stiff beam (bending) | lighter | 3% heavier |
| Stiff panel or plate | 1.81x heavier | lighter |
| Strong rod or tie | 6.28x heavier | lighter |
| Strong beam | 6.28x heavier | lighter |
| Strong panel or plate | 6.28x 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, Copper C110 or Plastic POM/Acetal?
Copper C110 conducts heat better: 391 W/m·K against 0.4 W/m·K for Plastic POM/Acetal.
Which expands less with temperature?
Copper C110 expands less: 16.9 µm/m·K against 122 µm/m·K for Plastic POM/Acetal.