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Akpako
Akpako (Napoleonaea vogelii)

Family: Lecythidaceae

Common names: Akpako, Asanpokua, Ashangpokua, Boi-boi, Bori-bori, Boribori, Burukuruwa, Burukuwa, Dwonkobe, Edwonkuben, Fetekro, Gohemi, Ngoyemi, Obua, Ogemme, Orokwa, Ukpagberajia, Wedi-quah-dro, Wedi-wa-doon

Distributed in: Benin, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, Sierra Leone, Togo (Africa)

Common uses: Fuelwood, Musical instruments, Tool handles

Tree size: Tree height is 10-20 m

Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodGreen/Grey, Same as heartwood.The grain isStraight, the textureMedium

Natural durability: Resistant to termites, Very durable

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Distortion, Splitting

Ease of Drying: Slowly

Comments: General finishing qualities are rated as poor

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Fairly Easy to Very Easy

Nailing: Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Easy to machine

Turning: Fairly Easy to Very Easy

Polishing: Satisfactory; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density kg/m3
Bending Strength kg/cm2
Crushing Strength kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English


Cooper, 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. LondonKeay, R.W.J., et al,1960,Nigerian Trees Vol.1,Nigeria Federal Department of Forest Research, IbadanUnwin, A.H.,1920,West African Forests and Forestry,T. Fisher Unwin Ltd. London
*Come interpretare i dati (manleva su eventuali imprecisioni)