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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Blunting Effect Boring Carving Certified Source Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Mortising Moulding Nailing Natural Durability Numerical Data Odor Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sapwood Color Scientific Name Screwing Strength Properties Texture Trade Name Tree Size Turning Scientific Name Antrocaryon klaineanum Trade Name Onzabili Family Name Anacardiaceae Common Names Akoua, Angonga, Anguekong, Aprokuma, Bougongi, Mugongo, N'Gongo, Onzabili Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Angola, Cameroon, Congo, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Nigeria, Zaire Common Uses Boxes and crates, Building materials, Casks, Chairs, Chests, Concealed parts (Furniture), Decorative plywood, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Furniture , Furniture components, Furniture squares or stock, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Living-room suites, Moldings, Office furniture, Packing cases, Plywood, Radio - stereo - TV cabinets, Rustic furniture, Stools, Structural plywood, Tables , Utility furniture, Utility plywood, Wardrobes Environmental Profile Abundant/Secure Inadequate information for some areas Generally secure within its natural habitat Distribution Overview West and Central Africa, extending from south-eastern Nigeria to Cabinda. Also found in Bioko. Heartwood Color White Brown Red Pink Pinkish white Pale brown Sapwood Color Even Straight Interlocked Grayish white Grain Birds-eye (figure) Interlocked slightly to moderately Texture Medium Medium-Textured Natural Durability Perishable Susceptible to insect attack Non-durable Very little resistance to decay Susceptible to blue stain attack Susceptible to attack by the powder-post beetle Susceptible to attack by insects Odor No specific smell or taste Drying Defects Checking Distortion Slight tendency to distort and check Rather large shrinkage Ease of Drying Medium to High Shrinkage Fairly Easy Dries at a medium rate and fairly easily Tree Size Tree height is 20-30 m Trunk diameter is 100-150 cm Trunk diameter is 150-200 cm Certified Source Certified Source Blunting Effect Moderate Little Slight to moderate blunting effect on cutters Boring Fair to good results Fairly easy to very easy Carving Fair to Good Results Fairly Easy to Very Easy Cutting Resistance Easy to saw Low resistance to sawing Gluing Fair to Good Results Good gluing properties Mortising Fair to Good Results Fairly Easy to Very Easy Moulding Fair to Good Results Fairly Easy to Very Easy Nailing Fair to Good Results Fairly Easy to Very Easy Nails without pre-boring Good nail holding properties Planing Fair to Good Results Fairly Easy to Very Easy Works well with both hand and machine tools in most machining operations Planes well but its fibrous nature may cause some tearing occasionally Resistance to Impregnation Resistant sapwood Resistant heartwood Moderately resistant to preservative treatment Response to Hand Tools Responds Readily Easy to Work Routing & Recessing Fair to Good Results Fairly Easy to Very Easy Screwing Fair to Good Results Fairly Easy to Very Easy Good screwing properties Good screw holding properties Turning Fair to Good Results Fairly Easy to Very Easy Polishing Surface Preparation Fair to Good Results Fairly Easy to Very Easy Requires filing and finishing for best results Strength Properties Max. crushing strength = high High weight High in density Bending strength (MOR) = very high It is far superior in strength to either Teak or Hard maple. Some familiar species with high crushing strength parallel to grain include Hard maple, Teak, and White oak Numerical Data Item Green Dry English Bending Strength 19757 psi Density 40 lbs/ft3 Maximum Crushing Strength 7272 psi Stiffness 1441 1000 psi Weight 50 39 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 7 % Item Green Dry Metric Bending Strength 1389 kg/cm2 Density 641 kg/m3 Maximum Crushing Strength 511 kg/cm2 Stiffness 101 1000 kg/cm2 Weight 801 624 kg/m3 Radial Shrinkage 4 % References Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research ITTO. 1986. Tropical Timber Atlas, Volume 1 - Africa. International Tropical Timber Organization (ITTO) and Centre Technique Forestier Tropical (CTFT, 45bis, Avenue de la Belle Gabrielle, Nogent-sur-Marne Cedex, France. Keay, R.W.J. 1989. Trees of Nigeria. Revised Version of Nigerian Trees. Clarendon Press, Oxford. WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.