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, BASF, Wieland, Covestro
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 Nylon PA66
BASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods)
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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
Wieland-K19 (Cu-DHP, C12200) Data SheetWielandarchived copyCopper C12200 · Poisson's ratio: reference value at room temperature (Wieland-K19 = Cu-DHP = C12200, rolled products)
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Engineering Polymers Part and Mold Design: Thermoplastics, A Design GuideCovestroPlastic Nylon PA66 · Poisson's ratio: base material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1)
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 Nylon PA66?
Plastic Nylon PA66 is stronger: its yield strength is 85 MPa against 69 MPa for Copper C12200 (23%).
Which is lighter, Copper C12200 or Plastic Nylon PA66?
Plastic Nylon PA66 is lighter: 1,130 kg/m³ against 8,941 kg/m³ for Copper C12200.
Which is stiffer, Copper C12200 or Plastic Nylon PA66?
Copper C12200 is stiffer: Young's modulus 117 GPa against 3 GPa for Plastic Nylon PA66, so the same part in Copper C12200 deflects less under the same load.
Which is lighter for the same job, Copper C12200 or Plastic Nylon PA66?
For the same stiffness or strength: Copper C12200 is lighter for a stiff rod or tie (tension); Plastic Nylon PA66 is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
Copper C12200
Plastic Nylon PA66
Stiff rod or tie (tension)
lighter
4.94x heavier
Stiff beam (bending)
27% heavier
lighter
Stiff panel or plate
2.33x heavier
lighter
Strong rod or tie
9.75x heavier
lighter
Strong beam
9.09x heavier
lighter
Strong panel or plate
8.78x 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 Nylon PA66?
Copper C12200 stretches further before it breaks: 45% elongation at break against 30% for Plastic Nylon PA66.
Thermal
Which conducts heat better, Copper C12200 or Plastic Nylon PA66?
Copper C12200 conducts heat better: 339 W/m·K against 0.33 W/m·K for Plastic Nylon PA66.
Which expands less with temperature?
Copper C12200 expands less: 16.9 µm/m·K against 98 µm/m·K for Plastic Nylon PA66.