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

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Ditta 4
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Ditta 2
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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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Chebakwa
Chebakwa (Neoboutonia macrocalyx)

Family: Euphorbiaceae

Common names: Chebakwa, Dundu, Kibatwa, Kipsebuet, Mahuhu, Mubohu, Muhaa, Mutundu, Mutundu-tundo, Mutuntuki, Sabaitet, Shawa

Distributed in: Congo, Kenya, Mozambique (Africa)

Common uses: Boat building (general), Boxes and crates, Cabinetmaking, Carvings, Food containers, Fuelwood, Furniture, Joinery, Light construction, Particleboard, Plywood corestock, Plywood, Pulp/Paper products, Sporting Goods, Toys

Tree size: Tree height is 30-40 m

Colors: the heart isWhite to cream, Yellowand the sapwoodSame as heartwood, Yellow.The grain isStraight, the textureFineand the lusterMedium

Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to marine borer attack

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as poor

Blunting Effect: Blunting effect on machining is slight

Cutting Resistance: Easy to saw

Nailing: Easy to nail, Nails hold poorly

Planing: Very Good to Excellent

Resistance to Impregnation: Sapwood is permeable

Response to hand tools: Easy to machine

Veneering qualities: Suitable for peeling, There is slight to moderate drying degrade and the potential for buckles and splits

Steam bending: Good

Screwing: Easy to screw, Poor results;

Polishing: Satisfactory; Staining: Finish is generally satisfactory ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 384 kg/m3
Bending Strength 429 674 kg/cm2
Crushing Strength 150 275 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength 85 kg/cm2
Stiffness 71 84 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 384 320 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6111 9589 psi
Density 24 lbs/ft3
Maximum Crushing Strength 2139 3916 psi
Shearing Strength 1221 psi
Stiffness 1017 1199 1000 psi
Weight 24 20 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 5 %

Density (dry weight) = 23-30 lbs/cu. ft. 1
Shrinkage, Tangential = very small
Shrinkage, Radial = very small
Modulus of Elasticity (stiffness) = very low
Max. crushing strength = low
Density (dry weight) = 15-22 lbs/cu. ft.
Bending strength (MOR) = low
Shrinkage, Tangential = small
Shrinkage, Radial = small
Shearing strength (parallel to grain) = very low
Shearing strength (parallel to grain) = 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 ResearchDale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards LondonEggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaFrance - C.T.F.T./C.T.B.,1982,Guide pour le Choix des Essences Deroulables-pour la fabrication du,contreplaque,C.T.F.T./C.T.B. FranceMurira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya
*Come interpretare i dati (manleva su eventuali imprecisioni)