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Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 3
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 2
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Tel.: +39 456 5664 54

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Ditta 1
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Tel.: +39 456 5664 54

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Ditta 0
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Tel.: +39 456 5664 54

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Akoriko
Akoriko (Haplormosia monophylla)

Family: Leguminosae

Common names: Akoriko, Black gum, Engenger, Idewa, Kah, Kak, Larme, Liberian black gum

Distributed in: Cameroon, Gabon, Ghana, Liberia, Nigeria, Sierra Leone (Africa)

Common uses: Agricultural implements, Boat building (general), Carvings, Flooring, Furniture, Heavy construction, Joinery, Millwork, Mine timbers, Piling, Plywood, Poles, Posts, Railroad ties, Sporting Goods, Tool handles, Turnery, Vehicle parts, Veneer: decorative, Wharf construction

Tree size: Tree height is 0-10 m

Colors: the heart isReddish brown, Yellowand the sapwoodWell defined, White to yellow.The grain isVery fine, the textureFine to mediumand the lusterLustrous

Natural durability: Resistant to attack from termites (Isoptera), Very durable

LightInduced Color Change: None

Kiln Schedules: Dry at a slow speed

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Gluing: Easy to glue

Resistance to Impregnation: Heartwood is extremely resistant

Resistance to Splitting: Poor

Response to hand tools: Moderate working qualities



  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 849 kg/m3
Bending Strength 1203 1734 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1051 kg
Impact Strength cm
Shearing Strength 155 kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage 9 %
Radial Shrinkage 4 %
Weight 833 673 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 17122 24667 psi
Density 53 lbs/ft3
Hardness 2318 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 2205 psi
Stiffness 1665 1923 1000 psi
Weight 52 42 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 9 %
Volumetric Shrinkage 13 %

Density (dry weight) = 46-52 lbs/cu. ft.
Bending strength (MOR) = very high
Shrinkage, Tangential = moderate
Shrinkage, Tangential = large
Shrinkage, Radial = very small
Shrinkage, Radial = large
Max. crushing strength = high
Density (dry weight) = 61-67 lbs/cu. ft
Density (dry weight) = 53-60 lbs/cu. ft
Shrinkage, Volumetric = fairly large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = medium
Modulus of Elasticity (stiffness) = medium
Hardness (side grain) = hard
Bending strength (MOR) = medium
Bending strength (MOR) = high

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,pp1-153Dalziel, J.M.,1937,The Useful Plants of West Tropical Africa,Crown Agents for the ColoniesDudek, S.,1981,Lesser Known Liberian Timber Species,German Agency for Technical Cooperation GermanyErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentIrvine, 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. 2159Kunkel, G.,1965,The Trees of Liberia,German Forestry Mission to Liberia Report,No.3Sallenave, 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
*Come interpretare i dati (manleva su eventuali imprecisioni)