Sapele
Entandrophragma cylindricum
Sapele measures 1,510 lbf on the Janka scale, 17% harder than northern red oak.
- Pin oak has exactly the same Janka figure.
- On the Janka scale its nearest neighbours are sweet birch at 1,470 lbf and afrormosia at 1,560 lbf.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
SapeleImported woods medianOther woods
Janka hardness
1,510 lbf6,717 N37th hardest of 15531st of 65 imported woods240 lbf3,680 lbfCupping tendency
1.6145th lowest of 1551.092.90Bending strength
15,300 psi105.5 MPa48th strongest of 1554,300 psi29,900 psiStiffness
1.82 M psi12.6 GPa55th stiffest of 1550.54 M psi4.06 M psiShrinkage across the face
7.4%radial 4.6%59th lowest of 1553.5%12.7%Density
0.5560th heaviest of 1550.250.96
How much it moves
Both its face shrinkage (7.4%) and its T/R ratio (1.61) sit in the middle half of the list.
0.44 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.28 in.
- Tangential
- 7.4%
- Radial
- 4.6%
- Volume
- 14.0%
- T/R ratio
- 1.61 (45th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
Woods of similar hardness
The eight nearest on the Janka scale, lbf.
Laboratory values
Its most unusual laboratory figure is shear strength: 14th highest of the 154 woods with a published value.
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Shear parallel to grain | 1,250psi | 2,260psi | +81% | 15.6MPa |
| Side hardness | 1,020lbf | 1,510lbf | +48% | 6,717N |
| Work to maximum load | 10.5in-lbf/in³ | 15.7in-lbf/in³ | +50% | 108.2kJ/m³ |
| Compression parallel to grain | 5,010psi | 8,160psi | +63% | 56.3MPa |
| Modulus of rupture | 10,200psi | 15,300psi | +50% | 105.5MPa |
| Modulus of elasticity | 1.49M psi | 1.82M psi | +22% | 12.6GPa |
Wood Handbook Table 5-5b, Table 4-4. Data & method · Guides