Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: Copper Development Association, DuPont, Wieland
Copper C12200
C12200 phosphorus-deoxidized copper (DHP, the air-conditioning and refrigeration tube copper), tube annealed to 0.050 mm grain size (OS050), 0.065 in. wall, copper.org typical values
Plastic POM/Acetal
DuPont Delrin 100 acetal homopolymer, Table 2 'Typical Properties of Delrin Acetal Resins' (ASTM methods), Delrin Design Guide Module III hosted on delrin.com
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C12200 Alloy (copper.org)Copper Development Associationarchived copyCopper C12200 · Yield strength: typical, 0.5% extension under load, 0.065 in. tubeCopper C12200 · Ultimate tensile strength: typical, 0.065 in. tubeCopper C12200 · Elongation at break: typical, 0.065 in. tubeCopper C12200 · Young's modulus (stiffness): typicalCopper C12200 · Density: nominalCopper C12200 · Thermal conductivity: typical, 20 °CCopper C12200 · Thermal expansion: typical, mean 20-100 °CCopper C12200 · Specific heat: typical, 20 °CCopper C12200 · Melting point: liquidus
Delrin 100 Product Data SheetDuPontPlastic POM/Acetal · Density: typical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties')
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Wieland-K19 (Cu-DHP, C12200) Data SheetWielandarchived copyCopper C12200 · Poisson's ratio: reference value at room temperature (Wieland-K19 = Cu-DHP = C12200, rolled products)
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Mechanical
Is Copper C12200 stronger than Plastic POM/Acetal?
Copper C12200 is stronger: its yield strength is 69 MPa against 69 MPa for Plastic POM/Acetal (0%).
Which is lighter, Copper C12200 or Plastic POM/Acetal?
Plastic POM/Acetal is lighter: 1,420 kg/m³ against 8,941 kg/m³ for Copper C12200.
Which is stiffer, Copper C12200 or Plastic POM/Acetal?
Copper C12200 is stiffer: Young's modulus 117 GPa against 2.8 GPa for Plastic POM/Acetal, so the same part in Copper C12200 deflects less under the same load.
Which is lighter for the same job, Copper C12200 or Plastic POM/Acetal?
For the same stiffness or strength: Copper C12200 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 C12200
Plastic POM/Acetal
Stiff rod or tie (tension)
lighter
6.65x heavier
Stiff beam (bending)
lighter
3% heavier
Stiff panel or plate
1.81x heavier
lighter
Strong rod or tie
6.3x heavier
lighter
Strong beam
6.3x heavier
lighter
Strong panel or plate
6.3x 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 is more ductile, Copper C12200 or Plastic POM/Acetal?
Plastic POM/Acetal stretches further before it breaks: 75% elongation at break against 45% for Copper C12200.
Thermal
Which conducts heat better, Copper C12200 or Plastic POM/Acetal?
Copper C12200 conducts heat better: 339 W/m·K against 0.4 W/m·K for Plastic POM/Acetal.
Which expands less with temperature?
Copper C12200 expands less: 16.9 µm/m·K against 122 µm/m·K for Plastic POM/Acetal.