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 Gluing Grain Heartwood Color Kiln Schedules Luster Natural Durability Planing 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 Turning		Scientific Name Guibourtia spp. Trade Name Bubinga Family Name Leguminosae Synonyms Copaifera spp. Common Names Bubinga, Essingang, Kevazingo, Ovang, Waka Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Cameroon, Congo, Gabon, Nigeria Common Uses Cabinetmaking, Furniture, Turnery, Veneer: decorative Heartwood Color Yellow to golden-yellow to orange Pale brown Sapwood Color White to yellow Well defined Grain Even Birds-eye (figure) Interlocked Straight Texture Medium Fine Fine Luster Low Natural Durability Durable Resistant to attack from termites (Isoptera) Moderately resistant to marine borer attack Kiln Schedules Dry at a slow speed UK=B US=T2C2/T2C1 Fr=5 Tree Identification Bole/stem form is straight Bole/stem form is cylindrical Bole/stem form is fluted Bole/stem form is buttressed Tree Size Sapwood width is 5-10 cm Comments General finishing qualities are rated as good Cutting Resistance Cutting Resistance with dry wood is easy Gluing Easy to glue Planing Easy to plane Resistance to Impregnation Permeable sapwood Resistant heartwood Resistant sapwood Sapwood is moderately resistant Heartwood is resistant Response to Hand Tools Easy to machine Turning Easy to turn Strength Properties Shrinkage, Volumetric = small Shrinkage, Volumetric = moderate Shrinkage, Volumetric = large Shrinkage, Volumetric = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = large Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = medium Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = very high Modulus of Elasticity (stiffness) = high Hardness (side grain) = very hard Hardness (side grain) = hard Density (dry weight) = 61-67 lbs/cu. ft. Density (dry weight) = 53-60 lbs/cu. ft. Density (dry weight) = 46-52 lbs/cu. ft. Figure Distinct (figure) Straight Interlocked Even Closed Wavy Irregular Bending Strength 17241 25113 psi Density 54 lbs/ft3 Hardness 2628 lbs Maximum Crushing Strength 8467 11767 psi Shearing Strength 1883 psi Stiffness 2373 2752 1000 psi Weight 53 43 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 8 % Volumetric Shrinkage 12 % Item Green Dry Metric Bending Strength 1212 1765 kg/cm2 Density 865 kg/m3 Hardness 1192 kg Maximum Crushing Strength 595 827 kg/cm2 Shearing Strength 132 kg/cm2 Stiffness 166 193 1000 kg/cm2 Weight 849 689 kg/m3 Radial Shrinkage 5 % Tangential Shrinkage 8 % Volumetric Shrinkage 12 % References Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison. Jay, B.A.,1968,Timbers of West Africa,TRADA, Red Booklet Series Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.T U.S.D.A. Forest Service,1952,Foreign Woods Imported into the U.S.,F.P.L. Madison Rep., No. R1903-12