USDA Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53705-2398
Wood Technology Transfer Fact Sheet
Other Common Names: Aboudikro (Ivory Coast), Penkwa (Ghana), Muyovu (Uganda), Sapelii (Cameroon), Libuyu (Zaire).
Distribution: Ranging from the Ivory Coast to the Cameroons and eastward through Zaire to Uganda. Occurs in evergreen, deciduous, and transitional forest formation.
The Tree: May reach a height of 150 to 200 ft; bole straight and cylindrical, clear to 100 ft; trunk diameters to 6 ft over broad, low buttresses, sometimes not buttressed.
General Characteristics: Heartwood a medium to fairly dark reddish brown or purplish brown; sapwood whitish or pale yellow, distinct. Texture rather fine; grain interlocked, sometimes wavy, producing a narrow, uniform, roe figure on quartered surfaces; lustrous; without a distinctive taste but with a cedarlike scent.
Weight: Basic specific gravity (ovendry weight/green volume) about 0.55; air-dry density 42 pcf.
Mechanical Properties: (2-cm standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
Green (9) 10,700 1,390 5,220
12% 16,100 1,700 5,500
12% (26) 16,500 1,700 8,900
Janka side hardness 1,020 lb for green and 1,500 lb for dry material. Amsler toughness 200 in.-lb for dry material (2-cm specimen).
Drying and Shrinkage: Seasons fairly rapidly but with a marked tendency to warp, very variable in drying properties, requires careful stacking. Kiln schedule T2- D4 is suggested for 4/4 stock and T2-D3 for 8/4. Shrinkage green to ovendry: radial 4.6%; tangential 7.4%; volumetric 14.0%. Movement in service is rated as medium.
Working Properties: Works fairly well with hand and machine tools, tends to tear interlocked grain in planing, saws easily, finishes well, good gluing and nailing properties, satisfactory peeling and slicing.
Durability: Heartwood is moderately durable, resistance to termite attack variable. Sapwood liable to powder-post beetle attack.
Preservation: Heartwood resistant; sapwood moderately resistant.
Uses: Furniture and cabinetwork, decorative veneers, plywood, joinery, flooring, paneling.
Additional Reading: (3), (9), (26)
3. Bolza, E., and W. G. Keating. 1972. African timbers-the properties, uses, and characteristics of 700 species. CSIRO. Div. of Build. Res., Melbourne, Australia.
9. Farmer, R. H. 1972. Handbook of hardwoods. H. M. Stationery Office. London.
26.France: Bois For. Trop. 1974. Sapelli (Entandrophragma cylindricum). Bois For. Trop. 154:27-40.
From: Chudnoff, Martin. 1984. Tropical Timbers of the World. USDA Forest Service. Ag. Handbook No. 607.