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Wood Properties: Douglas-fir
12% to Green
Wood mechanical, physical, and thermal properties for 190+ hardwood and softwood species at green and 12% moisture content — including strength, stiffness, hardness, shrinkage, thermal conductivity, Poisson ratios, and elastic ratios from the USDA Wood Handbook
| species name | moisture content | category | compression parallel kPa (kPa) | compression perpendicular kPa (kPa) | elastic ratio ER EL (dimensionless) | elastic ratio ET EL (dimensionless) | elastic ratio GLR EL (dimensionless) | elastic ratio GLT EL (dimensionless) | elastic ratio GRT EL (dimensionless) | modulus of elasticity MPa (MPa) | modulus of rupture kPa (kPa) | origin | poisson LR (dimensionless) | poisson LT (dimensionless) | poisson RL (dimensionless) | poisson RT (dimensionless) | poisson TL (dimensionless) | poisson TR (dimensionless) | shear parallel kPa (kPa) | specific gravity (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Douglas-fir | 12% | Softwood | 50,000 | 6,000 | 0.068 | 0.05 | 0.064 | 0.078 | 0.007 | 13,600 | 88,000 | Canadian/Imported | 0.292 | 0.449 | 0.036 | 0.39 | 0.029 | 0.374 | 9,500 | 0.45 |
| Douglas-fir | Green | Softwood | 24,900 | 3,200 | — | — | — | — | — | 11,100 | 52,000 | Canadian/Imported | — | — | — | — | — | — | 6,300 | 0.45 |
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