Materials / Compare

Plywood vs. Wood

Compare Plywood vs. Wood strength, stiffness, weight and thermal properties.

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PlywoodNatural
WoodNatural
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Mechanical
Yield strengthnot given (tensile used)not given (tensile used)
Ultimate tensile strength41.4MPasourcemodulus of rupture (no direct tensile value)99MPasourcemodulus of rupture (no direct tensile value)2.39x stronger
Compressive strengthnot sourced46.6MPasourcecompression parallel to grain (maximum crushing strength), 12% MC
Flexural strength41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species99MPasourcemodulus of rupture (static bending), 12% MC
Elongation at breaknot sourcednot sourced
Young's modulus (stiffness)7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species12.5GPasourcebending MOE, parallel to grain
Densitynot sourcednot sourced
Strength to weightnot sourcednot sourced
Stiffness to weightnot sourcednot sourced
Poisson's rationot sourced0.35sourcemu_LR (red oak group, ~12% MC)
Shear modulusnot sourced4.63GPa
Bulk modulusnot sourced13.9GPa
Speed of soundnot sourcednot sourced
Thermal
Thermal conductivity0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL0.18W/m·Ksourceacross grain, 12% MC (Table 4-7, approximate)
Thermal expansion3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species3.1–4.5µm/m·Ksourceparallel to grain, ovendry wood, range across species
100 mm part over a 50 °C swing19µm growth19µm growth
Specific heat1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C1,700J/kg·Ksourcesolid wood (all species), 12% MC, 27 C
Heats up and cools (diffusivity)not sourcednot sourced
Thermal shock resistancenot sourced244W/m
Values forDouglas-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)Northern red oak (Quercus rubra), clear straight-grained specimens at 12% MC, parallel to grain unless stated; USDA FPL Wood Handbook FPL-GTR-282 (2021) Ch. 4 and Ch. 5

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 Plywood stronger than Wood?

Wood is stronger: its tensile strength is 99 MPa against 41.4 MPa for Plywood (2.39x).

Which is stiffer, Plywood or Wood?

Wood is stiffer: Young's modulus 12.5 GPa against 7.45 GPa for Plywood, so the same part in Wood deflects less under the same load.

Which conducts heat better, Plywood or Wood?

Wood conducts heat better: 0.18 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 3.8 µm/m·K for Wood.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 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 UHMWPEPlastic 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 Steel
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 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 UHMWPEPlastic 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 SteelBrick
Strength against density

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