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Boring Certified Source Comments Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Schedules Luster Movement in Service Nailing Natural Durability Numerical Data Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Screwing Strength Properties Texture Trade Name Tree Identification Tree Size Veneering Qualities Scientific Name Brachystegia cynometroides Trade Name Bodgei Family Name Leguminosae Common Names Bodgei, Brown teak, Ekop, Ekop-naga, Meblo, Meblo okwen, Naga, Okwen, Tebako Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Cameroon, Ivory Coast, Liberia, Nigeria Common Uses Boat building (general), Boxes and crates, Coffins, Flooring, Furniture, Heavy construction, Joinery, Light construction, Millwork, Plywood, Vehicle parts, Veneer: decorative Heartwood Color Brown Yellow Red Black White Orange Reddish brown Sapwood Color White Yellow Brown Red Green/Grey Grain Distinct (figure) Interlocked Figure Closed Even Wavy Straight Interlocked Distinct figure Wavy Straight Texture Fine Very fine Coarse Medium Medium coarse to coarse Luster Medium High Lustrous Natural Durability Durable Very durable Resistant to termites Moderately durable Non-resistant to powder post beetles Susceptible to insect attack Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Susceptible to attack from termites (Isoptera) Sapwood is susceptible to wood staining fungal attack Susceptible to marine borer attack Pinworms (ambrosia beetles) are commonly present Perishable Non durable Moderately resistant to termite (Isoptera) attack Moderately durable Kiln Schedules Drying (speed) is fast Dry at a slow speed Drying Defects Checking Distortion Moderate end spitting Slight cupping Slight collapse and honeycomb Moderate surface checking Ease of Drying Moderately Difficult to Difficult Easy Tree Identification Bole/stem form is buttressed Tree Size Tree height is 10-20 m Tree height is 0-10 m Trunk diameter is 100-150 cm Sapwood width is 5-10 cm Certified Source Certified Source Comments General finishing qualities are rated as good Boring Easy Cutting Resistance Easy to saw Fairly Difficult to Very Difficult to saw Moderate to saw Cutting Resistance with dry wood is easy Gluing Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Easy to glue Movement in Service Medium Nailing Fair to Good Results Fairly Easy to Very Easy Very Good to Excellent Results Easy to nail Holds satisfactorily Difficult to nail Planing Fair to Good Results Fairly Easy to Very Easy Very Good to Excellent Results Easy to plane Resistance to Impregnation Sapwood is moderately resistant Heartwood is resistant Heartwood is extremely resistant Response to Hand Tools Easy to machine Screwing Fair to Good Results Fairly Easy to Very Easy Screwing yields satisfactory results Easy to screw Veneering Qualities Suitable for peeling Veneers easily Veneers moderately easy Difficult to veneer Suitable for slicing Polishing Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Satisfactory results Strength Properties Bending strength (MOR) = medium Shrinkage, Tangential = moderate Shrinkage, Radial = moderate Max. crushing strength = medium Max. crushing strength = high Shrinkage, Volumetric = moderate Shrinkage, Tangential = large Shrinkage, Radial = large Shrinkage, Radial = fairly large Modulus of Elasticity (stiffness) = low Density (dry weight) = 38-45 lbs/cu. ft. Bending strength (MOR) = high Shrinkage, Volumetic = fairly large Shrinkage, Tangential = small Shrinkage, Tangential = fairly large Shearing strength (parallel to grain) = very low Modulus of Elasticity (stiffness) = very low Hardness (side grain) = very soft Hardness (side grain) = soft Hardness (side grain) = medium Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = low Numerical Data Item Green Dry English Bending Strength 10071 15680 psi Density 39 lbs/ft3 Hardness 990 lbs Maximum Crushing Strength 5408 8171 psi Shearing Strength 882 psi Stiffness 1245 1445 1000 psi Weight 38 31 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 8 % Volumetric Shrinkage 11 % Item Green Dry Metric Bending Strength 708 1102 kg/cm2 Density 624 kg/m3 Hardness 449 kg Maximum Crushing Strength 380 574 kg/cm2 Shearing Strength 62 kg/cm2 Stiffness 87 101 1000 kg/cm2 Weight 608 496 kg/m3 Radial Shrinkage 5 % Tangential Shrinkage 8 % References Bois et Forets des Tropiques,1953,Naga (Brachystegia cynometroides,Bois et Forets des Tropiques,No.31, pp27-30 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 Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry Department France - C.T.F.T.,1977,Promotion of African Timbers - New Species,CTFT,35 Leaflets Hoheisel, H., Arroyo, J.,1966,Resultados Preliminares de las Propiedados Fisicas y Mecanicas de 30,especies,de la Guayana Venezolana,Inst. Forestal Latin Am. de Investigacoin y Capacitacion Venezuela Boletin,No.20-21 Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished data Letouzey, R., Mouranche, R.,1952,Ekop du Cammeroun,C.T.F.T,France Publ.,No.4 Revue des Bois et de ses Applications,1957,Naga (Brachystegia cynometriodes,Revue des Bois et de ses Applications,12(6,p33 Sallenave, P.,1964,Proprietes Physiques et Mecaniques des Bois Tropicaux (Premier Supplement,C.T.F.T. Publ.,no.23 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