Materials / Compare

Plywood vs. Silicon

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

Change either side
PlywoodNatural
SiliconGrown single crystal
Try it on a partA panel to run stress or thermal on, free in your browserOpen in LessCADOpen in LessCAD
Mechanical
Yield strengthnot given (tensile used)not given (tensile used)
Ultimate tensile strength41.4MPasourcemodulus of rupture (no direct tensile value)130MPasourcemodulus of rupture (bending fracture stress); brittle, no yield point
Flexural strength41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species130MPasourcemodulus of rupture
Elongation at breaknot sourcednot sourced
Young's modulus (stiffness)7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species131GPasourcetypical (single quoted value of an anisotropic crystal)
Densitynot sourced2,329kg/m³sourcetypical
Strength to weightnot sourced55.8kN·m/kg
Stiffness to weightnot sourced56.2MN·m/kg
Poisson's rationot sourced0.221sourcetypical
Shear modulusnot sourced53.6GPa
Bulk modulusnot sourced78.3GPa
Speed of soundnot sourced7,500m/s
Thermal
Thermal conductivity0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL163W/m·Ksourcetypical at 313 K (40 °C)
Thermal expansion3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species2.62µm/m·Ksourcetypical at 300 K
100 mm part over a 50 °C swing19µm growth13.1µm growth45% less
Specific heat1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C732J/kg·Ksourcetypical
Heats up and cools (diffusivity)not sourced95.6mm²/s
Thermal shock resistancenot sourced48,095W/m
Melting pointnot sourced1,412°Csourcetypical
Max service temperaturenot sourced300°Csourceproducer's maximum application temperature (optical components)
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)Synthetic single-crystal silicon (cubic, diamond structure), Korth Kristalle (crystal grower) material data; Korth usually supplies Floating Zone (FZ) material, Czochralski (Cz) also offered. Silicon is elastically anisotropic; the producer quotes one modulus and the solver is isotropic.

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 Silicon?

Silicon is stronger: its tensile strength is 130 MPa against 41.4 MPa for Plywood (3.14x).

Which is stiffer, Plywood or Silicon?

Silicon is stiffer: Young's modulus 131 GPa against 7.45 GPa for Plywood, so the same part in Silicon deflects less under the same load.

Which conducts heat better, Plywood or Silicon?

Silicon conducts heat better: 163 W/m·K against 0.12 W/m·K for Plywood.

Which expands less with temperature?

Silicon expands less: 2.62 µm/m·K against 3.8 µm/m·K for Plywood.

Among 72 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 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 SteelPCB Laminate FR-4Ceramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Silicon
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 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 SteelBrickPCB Laminate FR-4Ceramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Silicon
Strength against density

Related comparisons