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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
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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 |
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| Brown |
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| Orange |
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| Pale red to pink |
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| Pale brown |
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Sapwood Color
Grain
Texture
| Fine |
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| Fine to medium |
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| Medium to coarse |
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Luster
Natural Durability
| Very durable |
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| Resistant to marine borers |
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| Resistant to termites |
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| Non durable |
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| Susceptible to attack from powder post (Lyctid & Bostrychid) beetles |
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| Perishable |
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| Moderately resistant to termite (Isoptera) attack |
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| Moderately durable |
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Kiln Schedules
Tree Identification
| Bole/stem form is buttressed |
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Tree Size
| Tree height is 10-20 m |
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| Tree height is 0-10 m |
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Comments
General finishing qualities are rated as good
Cutting Resistance
| Cutting resistance with dry wood is variable |
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Resistance to Impregnation
| Sapwood is permeable |
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| Heartwood is extremely resistant |
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Response to Hand Tools
| Easy to Work |
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| Easy to machine |
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Polishing
| Fair to Good Results |
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| Very Good to Excellent Results |
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Strength Properties
| Density (dry weight) = 53-60 lbs/cu. ft |
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| Max. crushing strength = medium |
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| Bending strength (MOR) = medium |
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| Shrinkage, Tangential = large |
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| Shrinkage, Tangential = fairly large |
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| Shrinkage, Radial = large |
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| Shrinkage, Radial = fairly large |
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| Hardness (side grain) = very soft |
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| Density (dry weight) = 46-52 lbs/cu. ft. |
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| Density (dry weight) = 38-45 lbs/cu. ft. |
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| Shrinkage, Volumetric = large |
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| Shrinkage, Tangential = moderate |
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| Shrinkage, Radial = moderate |
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| Modulus of Elasticity (stiffness) = medium |
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| Hardness (side grain) = soft |
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| Bending strength (MOR) = high |
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Numerical Data
| Item | Green | Dry | English |
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| 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 | | % |
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| Item | Green | Dry | Metric |
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| 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
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