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Aklo kida
Aklo kida (Blighia unijugata)

Family: Sapindaceae

Common names: Aklo kida, Akye, Akyebiri, Akyefufu, Akyetabon, Akyewa, Ankyebiri, Ankyewa, Awole, Buba, Dimuma buba, Dimuma kalemba, Dumuma dia mpata, Edwendwena, Etedua, Ishin oko, Kaasi, Muhohote, Muikuni, Mukuzadhyana, Musandikira, Mwatebale, Nkuzanyana, Ojawala, Ukpe, Ukpe nehwi, Ukpe nofua, Usinogbigbbo, Yokomi

Distributed in: Ghana, Nigeria, Uganda (Africa)

Common uses: Agricultural implements, Boat building (general), Boxes and crates, Flooring, Fuelwood, Furniture, Heavy construction, Joinery, Light construction, Mine timbers, Plywood, Posts, Pulp/Paper products, Turnery

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isPale brown, Yellowand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureMedium to coarseand the lusterMedium

Natural durability: Perishable, Susceptible to attack from powder post (Lyctid & Bostrychid) beetles

Kiln Schedules: UK=B US=T2C2/T2C1 Fr=2

Ease of Drying: Moderately Difficult to Difficult

Tree Identification: Bole/stem form is not buttressed

Blunting Effect: Blunting effect on machining is fairly severe

Gluing: Gluing is often difficult

Planing: Fairly Easy to Very Easy

Resistance to Impregnation: Sapwood is permeable

Resistance to Splitting: Poor

Response to hand tools: Moderate working qualities

Turning: Good results

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 592 kg/m3
Bending Strength 478 744 kg/cm2
Crushing Strength 244 406 kg/cm2
Hardness 601 kg
Impact Strength 68 cm
Shearing Strength 160 kg/cm2
Stiffness 83 97 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 576 464 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6810 10586 psi
Density 37 lbs/ft3
Hardness 1326 lbs
Impact Strength 27 inches
Maximum Crushing Strength 3472 5777 psi
Shearing Strength 2288 psi
Stiffness 1188 1383 1000 psi
Weight 36 29 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %

Density (dry weight) = 38-45 lbs/cu. ft.
Max. crushing strength = medium
Shrinkage, Radial = large
Shearing strength (parallel to grain) = medium
Density (dry weight) = 31-37 lbs/cu. ft.
Toughness-Hammer drop (Impact Strength) = very low
Toughness-Hammer drop (Impact Strength) = medium
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Tangential = large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = very high
Shearing strength (parallel to grain) = low
Modulus of Elasticity (stiffness) = very low
Modulus of Elasticity (stiffness) = low
Max. crushing strength = low
Hardness (side grain) = soft
Hardness (side grain) = medium
Bending strength (MOR) = very low
Bending strength (MOR) = medium
Bending strength (MOR) = low

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchEggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaIrvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonKeay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, IbadanKennedy, J.D.,1936,Forest Flora of Southern Nigeria,Government Printer LagosLebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Tack, C.H.,1969,Uganda Timbers,Govt. Printer UgandaTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Taylor, C.J.,1960,Synecology and Silviculture in Ghana,University College of Ghana Thomas Nelson and SonsUnwin, A.H.,1920,West African Forests and Forestry,T. Fisher Unwin Ltd. LondonWhite, F.,1962,Forest Flora of Northern Rhodesia,O.U.P. London
*Come interpretare i dati (manleva su eventuali imprecisioni)