Materials / Plywood
Plywood
Plywood (structural) strength, stiffness, density and thermal properties, with their source.
A panel in Plywood, natural grain finish.
| Process | Natural |
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| Mechanical |
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| Yield strength | not given (tensile used) |
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| Ultimate tensile strength | 41.4MPasourcemodulus of rupture (no direct tensile value) |
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| Flexural strength | 41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species |
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| Elongation at break | not sourced |
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| Young's modulus (stiffness) | 7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species |
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| Density | not sourced |
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| Strength to weight | not sourced |
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| Stiffness to weight | not sourced |
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| Poisson's ratio | not sourced |
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| Shear modulus | not sourced |
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| Bulk modulus | not sourced |
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| Speed of sound | not sourced |
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| Thermal |
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| Thermal conductivity | 0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL |
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| Thermal expansion | 3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species |
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| 100 mm part over a 50 °C swing | 19µm growth |
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| Specific heat | 1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C |
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| Heats up and cools (diffusivity) | not sourced |
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| Thermal shock resistance | not sourced |
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| Values for | 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) |
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Among 59 materials
Stiffness against densityStrength against density