Aweruku (Strephonema pseudocola)
Family: Combretaceae
Common names: Aweruku, Degbeme weli, Degbeme yawii, Kovui, Potopoto, Tentout, Tutuabu
Distributed in: Ghana, Ivory Coast, Liberia, Sierra Leone (Africa)
Common uses: Agricultural implements, Boat building (general), Cabinetmaking, Flooring, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Sporting Goods, Toys
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isRed, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isStraight, the textureMediumand the lusterSlightly lustrous
Natural durability: Susceptible to marine borer attack, Very durable
Drying Defects: Moderate twist/warp
Ease of Drying: Fairly Easy
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good
Cutting Resistance: Easy to saw
Gluing: Fairly Easy to Very Easy
Nailing: Easy to nail
Resistance to Impregnation: Resistant sapwood
Resistance to Splitting: Poor
Response to hand tools: Easy to Work
Turning: Fairly Easy to Very Easy
Polishing: Very Good to Excellent;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
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721 |
kg/m3 |
Bending Strength |
804 |
1248 |
kg/cm2 |
Crushing Strength |
275 |
449 |
kg/cm2 |
Hardness |
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752 |
kg |
Impact Strength |
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cm |
Shearing Strength |
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kg/cm2 |
Stiffness |
117 |
135 |
1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
5 |
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% |
Weight |
705 |
560 |
kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 11442 | 17761 | psi | Density | | 45 | lbs/ft3 | Hardness | | 1658 | lbs | Maximum Crushing Strength | 3916 | 6397 | psi | Stiffness | 1665 | 1923 | 1000 psi | Weight | 44 | 35 | lbs/ft3 | Radial Shrinkage | 5 | | % | Tangential Shrinkage | 10 | | % | |
Shrinkage, Tangential = large Shrinkage, Radial = fairly large Density (dry weight) = 46-52 lbs/cu. ft. Max. crushing strength = medium Bending strength (MOR) = medium Bending strength (MOR) = high Shrinkage, Radial = large Modulus of Elasticity (stiffness) = medium Hardness (side grain) = medium Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Tangential = fairly large
Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchCooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonKryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSavill, P.S., Fox, J.E.D.,1967,Trees of Sierra LeoneTakahashi, 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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