Spanish-cedar
Cedrela spp.
Spanish-cedar measures 600 lbf on the Janka scale, about 47% as hard as northern red oak.
- Douglas-fir (Interior North) has exactly the same Janka figure.
- Across all 155 woods it falls in the bottom fifth for face shrinkage and T/R ratio.
- On the Janka scale its nearest neighbours are tamarack at 590 lbf and ilomba at 610 lbf.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Spanish-cedarImported woods medianOther woods
Cupping tendency
1.5025th lowest of 1551.092.90Shrinkage across the face
6.3%radial 4.2%28th lowest of 1553.5%12.7%Stiffness
1.44 M psi9.9 GPa42nd most flexible of 15528% below the imported woods median0.54 M psi4.06 M psiDensity
0.4143rd lightest of 15533% below the imported woods median0.250.96Janka hardness
600 lbf2,669 N44th softest of 15557th of 65 imported woods; 54% below the imported woods median240 lbf3,680 lbfBending strength
11,500 psi79.3 MPa58th weakest of 15531% below the imported woods median4,300 psi29,900 psi
How much it moves
Little movement, and evenly split between the two directions: one of the steadiest woods in the tables.
0.38 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.25 in.
- Tangential
- 6.3%
- Radial
- 4.2%
- Volume
- 10.3%
- T/R ratio
- 1.50 (25th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Red alder
2% softer · 10% lighter · shrinks 1.0 points more across the face
- Bigleaf maple
42% harder · 7% heavier · shrinks 0.8 points more across the face
- American chestnut
10% softer · 2% lighter · shrinks 0.4 points more across the face
Woods of similar hardness
The eight nearest on the Janka scale, lbf.
Laboratory values
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Shear parallel to grain | 990psi | 1,100psi | +11% | 7.60MPa |
| Modulus of elasticity | 1.31M psi | 1.44M psi | +10% | 9.93GPa |
| Side hardness | 550lbf | 600lbf | +9% | 2,669N |
| Work to maximum load | 7.10in-lbf/in³ | 9.40in-lbf/in³ | +32% | 64.8kJ/m³ |
| Modulus of rupture | 7,500psi | 11,500psi | +53% | 79.3MPa |
| Compression parallel to grain | 3,370psi | 6,210psi | +84% | 42.8MPa |
Wood Handbook Table 5-5b, Table 4-4. Data & method · Guides