Materials / Compare

Plastic UHMWPE vs. Plywood

Compare Plastic UHMWPE vs. Plywood strength, stiffness, weight and thermal properties.

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Plastic UHMWPEBulk polymer (molded or machined)
PlywoodNatural
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Mechanical
Yield strength20MPasourcetypical, tensile stress at yield ISO 527, 50 mm/minnot given (tensile used)
Ultimate tensile strength43MPasourcetypical, tensile stress at break ISO 527, 50 mm/min41.4MPasourcemodulus of rupture (no direct tensile value)
Flexural strengthnot sourced41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species
Elongation at break465%sourcetypical, nominal elongation at break ISO 527not sourced
Young's modulus (stiffness)0.66GPasourcetypical, tensile modulus ISO 527, 1 mm/min7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species
Density930kg/m³sourcetypicalnot sourced
Strength to weight21.5kN·m/kgnot sourced
Stiffness to weight0.71MN·m/kgnot sourced
Poisson's rationot sourcednot sourced
Shear modulusnot sourcednot sourced
Bulk modulusnot sourcednot sourced
Speed of sound842m/snot sourced
Thermal
Thermal conductivity0.4W/m·Ksourcetypical, unfilled (narrative value, generic Celanese UHMWPE)0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL
Thermal expansion200µm/m·Ksourcetypical, 20 to 100 °C (generic Celanese UHMWPE)3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species
100 mm part over a 50 °C swing1,000µm growth19µm growth52.6x less
Specific heatnot sourced1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C
Heats up and cools (diffusivity)not sourcednot sourced
Thermal shock resistancenot sourcednot sourced
Melting point130–138°CsourceDSC 10 K/minnot sourced
Max service temperature80°Csourcerecommended max constant operating temperaturenot sourced
Values forCelanese GUR 4120 (avg. molecular weight 4.7x10^6 g/mol), typical values on compression-molded specimens; CTE and thermal conductivity from Celanese's generic UHMWPE guide (grade not named)Douglas-fir plywood sheathing (construction plywood per PS 1), static bending properties from USDA FPL Wood Handbook FPL-GTR-282 Ch. 12 Table 12-2 (Biblis 2000)

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 Plastic UHMWPE stronger than Plywood?

Plywood is stronger: its tensile strength is 41.4 MPa against yield strength 20 MPa for Plastic UHMWPE (2.07x).

Which is stiffer, Plastic UHMWPE or Plywood?

Plywood is stiffer: Young's modulus 7.45 GPa against 0.66 GPa for Plastic UHMWPE, so the same part in Plywood deflects less under the same load.

Which conducts heat better, Plastic UHMWPE or Plywood?

Plastic UHMWPE conducts heat better: 0.4 W/m·K against 0.12 W/m·K for Plywood.

Which expands less with temperature?

Plywood expands less: 3.8 µm/m·K against 200 µm/m·K for Plastic UHMWPE.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelPlastic UHMWPE
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPlastic UHMWPE
Strength against density

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