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Fornitori

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

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Ditta 4
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Ditta 3
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Ditta 2
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Tel.: +39 456 5664 54

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Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 0
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Tel.: +39 456 5664 54

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Abrahassa
Abrahassa (Ochthocosmus africanus)

Family: Ixonanthaceae

Common names: Abrahassa, Araba-uji, Bokubi, Buwelekoloma, Fegurugoongo, Ka-thonai, Sasakate, Towa nyenye, Towane, Towanye, Towanyei, Tuafa, Tuanyei, Tundui-balo, Twanyei

Distributed in: Cameroon, Congo, Gabon, Ghana, Guinea, Ivory Coast, Nigeria, Zaire (Africa)

Common uses: Boat building (general), Carvings, Charcoal, Flooring, Fuelwood, Furniture, Heavy construction, Joinery, Light construction, Millwork, Mine timbers, Musical instruments, Poles, Posts, Railroad ties, Turnery

Tree size: Tree height is 10-20 m

Colors: the heart isPurple, Redand the sapwoodWhite to yellow .The grain isStraight, the textureFine

Natural durability: Susceptible to insect attack, Very durable

Kiln Drying Rate: Naturally dries slowly

Ease of Drying: Slowly

Tree Identification: Bole/stem form is buttressed

Comments: General finishing qualities are rated as satisfactory

Gluing: Fairly Easy to Very Easy

Nailing: Holds nails well, Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Splitting: Satisfactory

Response to hand tools: Easy to Work

Screwing: Pre-boring recommended ;

Polishing: Satisfactory;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 929 kg/m3
Bending Strength kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1051 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage 9 %
Radial Shrinkage 6 %
Weight 913 737 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Density 58 lbs/ft3
Hardness 2318 lbs
Maximum Crushing Strength 6899 9945 psi
Stiffness 2167 2494 1000 psi
Weight 57 46 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %
Volumetric Shrinkage 15 %

Shrinkage, Tangential = large
Shrinkage, Radial = large
Density (dry weight) = 61-67 lbs/cu. ft
Density (dry weight) = 53-60 lbs/cu. ft
Shrinkage, Volumetric = large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Modulus of Elasticity (stiffness) = high
Max. crushing strength = high
Hardness (side grain) = hard

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchFouarge, J.,1953,Bois du Congo,I.N.E.A.C.Irvine, 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, IbadanSavill, P.S., Fox, J.E.D.,1967,Trees of Sierra Leone
*Come interpretare i dati (manleva su eventuali imprecisioni)