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content="text/html; charset=ISO-8859-1" http-equiv="content-type"> 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. Common Names Common Uses Family Name Grain Heartwood Color Luster Movement in Service Numerical Data References Regions of Distribution Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Identification Tree Size Scientific Name Antiaris spp. Trade Name Ako Family Name Moraceae Common Names Ako, Antiaris, Chenchen, Kirundo, Kyenkyen, Mkuzu, Mlulu, Mumaka, Ogiovu, Oro Regions of Distribution Africa Common Uses Joinery, Millwork, Plywood, Tool handles Heartwood Color White Yellow Red Brown Orange Yellow to golden-yellow to orange White to cream Pale brown Sapwood Color Red Yellow White Same as heartwood Grain Interlocked Interlocked Texture Coarse Medium Medium to coarse Luster Medium Lustrous Tree Identification Bole/stem form is straight Bole/stem form is cylindrical Bole/stem form is buttressed Tree Size Bole length is 20-30 m Tree height is 30-40 m Tree height is 40-50 m Trunk diameter is 100-150 cm Trunk diameter is 150-200 cm Movement in Service Excellent Stability - Small Movement Small Strength Properties Max. crushing strength = low Bending strength (MOR) = low Shrinkage, Volumetric = moderate Modulus of Elasticity (stiffness) = very low Max. crushing strength = medium Hardness (side grain) = very soft Shrinkage, Tangential = moderate Shrinkage, Radial = moderate Density (dry weight) = 23-30 lbs/cu. ft. Bending strength (MOR) = very low Numerical Data Item Green Dry English Bending Strength 5211 8098 psi Density 25 lbs/ft3 Hardness 319 lbs Maximum Crushing Strength 2850 4909 psi Stiffness 1017 1199 1000 psi Weight 25 21 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 7 % Volumetric Shrinkage 11 % Item Green Dry Metric Bending Strength 366 569 kg/cm2 Density 400 kg/m3 Hardness 144 kg Maximum Crushing Strength 200 345 kg/cm2 Stiffness 71 84 1000 kg/cm2 Weight 400 336 kg/m3 Radial Shrinkage 4 % Tangential Shrinkage 7 % References Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison. U.S.D.A. Forest Service,1952,Foreign Woods Imported into the U.S.,F.P.L. Madison Rep., No. R1903-12