Materials / Compare

Aluminum vs. Plywood

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

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AluminumWrought
PlywoodNatural
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Mechanical
Yield strength276MPasourcetypical, 0.2% offset, .500 in dia specimennot given (tensile used)
Ultimate tensile strength310MPasourcetypical41.4MPasourcemodulus of rupture (no direct tensile value)
Flexural strengthnot sourced41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species
Elongation at break17%sourcetypical, in 4D, 0.500 in dia specimennot sourced
Young's modulus (stiffness)68.3GPasourcetypical7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species
Density2,700kg/m³sourcenominalnot sourced
Strength to weight102kN·m/kgnot sourced
Stiffness to weight25.3MN·m/kgnot sourced
Poisson's ratio0.33sourcetypical (handbook physical constant)not sourced
Shear modulus25.7GPanot sourced
Bulk modulus67GPanot sourced
Speed of sound5,030m/snot sourced
Thermal
Thermal conductivity167W/m·Ksourcetypical, 20 °C0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL
Thermal expansion23.6µm/m·Ksourcetypical, mean 20-100 °C3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species
100 mm part over a 50 °C swing118µm growth19µm growth6.21x less
Specific heat896J/kg·Ksourcetypical, at 100 °C1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C
Heats up and cools (diffusivity)69mm²/snot sourced
Thermal shock resistance19,159W/mnot sourced
Melting point582–652°Csourcesolidus-liquidusnot sourced
Values for6061-T6/T651, Kaiser Aluminum typical properties (sheet, coil & plate datasheet); Poisson from MIL-HDBK-5JDouglas-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 Aluminum stronger than Plywood?

Aluminum is stronger: its yield strength is 276 MPa against tensile strength 41.4 MPa for Plywood (6.67x).

Which is stiffer, Aluminum or Plywood?

Aluminum is stiffer: Young's modulus 68.3 GPa against 7.45 GPa for Plywood, so the same part in Aluminum deflects less under the same load.

Which conducts heat better, Aluminum or Plywood?

Aluminum conducts heat better: 167 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 23.6 µm/m·K for Aluminum.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonSteelIronTitaniumSteel 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 SteelAluminum
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberSteelIronTitaniumSteel 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 SteelBrickAluminum
Strength against density

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