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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 Drying Defects Family Name Gluing Grain Nailing Natural Durability Numerical Data Painting Polishing References Regions of Distribution Response to Hand Tools Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Identification Tree Size Varnishing Scientific Name Fillaeopsis discophora Trade Name Angongi Family Name Leguminosae Common Names Angongi, Bongonge, Bongongi, Bongongui, Douala, Enoumnoume, Esonanaka, Etotum, Kele, Kwokwo, Mbaka, Mukubakuba, Mupukupuku, Nieuk, Oviokan, Oyi okan, Sonanaka, Totom Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Angola, Cameroon, Congo, Gabon, Nigeria, Zaire Common Uses Boat building (general), Furniture, Joinery, Millwork, Plywood, Vehicle parts, Veneer: decorative Weak (figure) Straight Figure Even Yellow White Orange Pale red to pink Brown Sapwood Color Pinkish Grain Even Straight Figure Weak (figure) Texture Fine Medium to coarse Coarse Natural Durability Non-resistant to powder post beetles Susceptible to insect attack Non durable Drying Defects Splitting Tree Identification Bole/stem form is buttressed Bole/stem form is fluted Tree Size Tree height is 10-20 m Tree height is 0-10 m Sapwood width is 5-10 cm Tree height is 20-30 m Tree height is 30-40 m Comments General finishing qualities are rated as poor Cutting Resistance Cutting Resistance with dry wood is easy Gluing Easy to glue Nailing Easy to nail Response to Hand Tools Easy to machine Painting Satisfactory results Polishing Satisfactory results Varnishing Satisfactory Strength Properties Max. crushing strength = medium Max. crushing strength = low Bending strength (MOR) = low Shrinkage, Volumetric = small Shrinkage, Volumetric = moderate Shrinkage, Tangential = small Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = small Shrinkage, Radial = moderate Modulus of Elasticity (stiffness) = very low Hardness (side grain) = very soft Bending strength (MOR) = medium Shearing strength (parallel to grain) = very low Modulus of Elasticity (stiffness) = low Hardness (side grain) = soft Bending strength (MOR) = high Numerical Data Item Green Dry English Bending Strength 8422 13143 psi Hardness 544 lbs Maximum Crushing Strength 3027 5157 psi Shearing Strength 882 psi Stiffness 1131 1321 1000 psi Radial Shrinkage 4 % Tangential Shrinkage 7 % Volumetric Shrinkage 10 % Item Green Dry Metric Bending Strength 592 924 kg/cm2 Hardness 246 kg Maximum Crushing Strength 212 362 kg/cm2 Shearing Strength 62 kg/cm2 Stiffness 79 92 1000 kg/cm2 Radial Shrinkage 4 % Tangential Shrinkage 7 % References Duchesne, F.L.,1936,La Structure du Bois d'une Legumineuse Interesante du Congo Belge :,Fillaeopsis discophora Harms,Rev. Zool. Bot.,AFR.,28(2,PP234-8 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 Keay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, Ibadan Kennedy, J.D.,1936,Forest Flora of Southern Nigeria,Government Printer Lagos Pieters, A.,1977,Essences Forestieres du Zaire,R.U.G. Gent Belguim Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,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 Unwin, A.H.,1920,West African Forests and Forestry,T. Fisher Unwin Ltd. London Yvon, J.,1975,Le Nieuk (Fillaeopsis discophora,Bois et Forets des Tropiques,No.159,pp73-6