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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. Comments Common Names Common Uses Countries of Distribution Cutting Resistance Family Name Grain Heartwood Color Kiln Schedules Luster Natural Durability Numerical Data Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size Scientific Name Allanblackia floribunda Trade Name Agnuhe Family Name Guttiferae Synonyms Allanblackia parviflora Common Names Agnuhe, Akumase, Alabenun, Anane, Atta, Banummabi, Bissaboko, Bombolo, Bouandjo, Egba, Esonye duku, Iyolkan, Izeni, Koma, Obifi, Okisidwe, Okusiedua, Orogbo erin, Ouotera, Sonkyi, Sonye, Suankyi, Suein, Tallow tree, Wohotelimon, Wotube ewotebo Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Congo, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, Zaire Common Uses Agricultural implements, Boxes and crates, Flooring, Furniture, Heavy construction, Joinery, Light construction, Millwork, Mine timbers, Particleboard, Poles, Posts, Turnery Heartwood Color Yellow Brown Orange Pale red to pink Pale brown Sapwood Color White Yellow Grain Even Straight Texture Fine Fine to medium Medium to coarse Luster Medium Slightly lustrous Natural Durability Very durable Resistant to marine borers Resistant to termites Non durable Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Perishable Moderately resistant to termite (Isoptera) attack Moderately durable Kiln Schedules Dry at a slow speed Tree Identification Bole/stem form is buttressed Tree Size Tree height is 10-20 m Tree height is 0-10 m Comments General finishing qualities are rated as good Cutting Resistance Cutting resistance with dry wood is variable Resistance to Impregnation Sapwood is permeable Heartwood is extremely resistant Response to Hand Tools Easy to Work Easy to machine Polishing Fair to Good Results Very Good to Excellent Results Strength Properties Density (dry weight) = 53-60 lbs/cu. ft Max. crushing strength = medium Bending strength (MOR) = medium Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = large Shrinkage, Radial = fairly large Hardness (side grain) = very soft Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Volumetric = large Shrinkage, Tangential = moderate Shrinkage, Radial = moderate Modulus of Elasticity (stiffness) = medium Hardness (side grain) = soft Bending strength (MOR) = high Numerical Data Item Green Dry English Bending Strength 10376 16163 psi Density 50 lbs/ft3 Hardness 544 lbs Maximum Crushing Strength 3916 6397 psi Stiffness 1665 1923 1000 psi Weight 49 39 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 9 % Volumetric Shrinkage 15 % Item Green Dry Metric Bending Strength 729 1136 kg/cm2 Density 801 kg/m3 Hardness 246 kg Maximum Crushing Strength 275 449 kg/cm2 Stiffness 117 135 1000 kg/cm2 Weight 785 624 kg/m3 Radial Shrinkage 5 % Tangential Shrinkage 9 % 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 Cooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153 Fouarge, J.,1970,Essais Physiques,Mecaniques et de Durabilite de Bois de la Republique,Democratique du Congo,I.N.E.A.C. Belgium Serie Technique,No.76 Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. London Kryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159 Lebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5 Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.T Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7