USDA Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53705-2398
Wood Technical Fact Sheet
Other Common Names: Ake, Akewe (Gabon).
Distribution: Gabon and Cameroon; scattered distribution in dense primary forests and transitional formations.
The Tree: Reaches a height of 120 ft; bole straight, cylindrical and clear to 30 to 60 ft; trunk diameters 3 to 4 ft over thick buttresses.
General Characteristics: Heartwood orange- , gray- , or pink yellow with a gray hue; sapwood not well demarcated. Texture very fine and even; grain straight.
Weight: Basic specific gravity (ovendry weight/green volume) about 0.60; air-dry density 46 pcf.
Mechanical Properties: (2-cm standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
12% (47) 17,500 1,520 9,800
12% (47) 13,800 1,830 8,050
Amsler toughness 116 in.-lb at 12% moisture content (2-cm specimen).
Drying and Shrinkage: Dries easily with little or no degrade. No information on kiln schedules. Shrinkage green to ovendry: radial 3.4%; tangential 6.0%; volumetric 10.4%.
Working Properties: Saws well and works easily with hand and machine tools, easy to glue and nail, takes a good finish.
Durability: Heartwood has high durability and is resistant to termites. Sapwood is liable to stain. Satisfactory weathering properties.
Preservation: Heartwood is resistant to impregnation.
Uses: Millwork (door and window framing), furniture, flooring, turnery, carving.
Additional Reading: (3),(12), (47)