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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 3
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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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Abo-ako
Abo-ako (Homalium letestui)

Family: Flacourtiaceae

Common names: Abo-ako, Akporo, Akpurukwe, Basa bro-kpar, Di iroa, Ekalado, Eson-kruma, Esono-nankoroma, Esononankoroma, Homalium, Kalado, Koli-galei, Melefoufou, Miarire, Mmepomdua, Nyegalei, Otu, Roko bachi, Teinpiando

Distributed in: Angola, Gabon, Guinea, Liberia, Nigeria, Sierra Leone (Africa)

Common uses: Agricultural implements, Boat building (general), Carvings, Flooring, Furniture, Heavy construction, Joinery, Light construction, Mine timbers, Poles, Railroad ties, Sporting Goods, Vehicle parts

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isBlack, Brownand the sapwoodBrown, Red.The grain isStraight, the textureUniform

Natural durability: Resistant to attack from powder post (Lyctid & Bostrychid) beetles, Resistant to termites

Drying Defects: Checking, Distortion

Ease of Drying: Thick Stock Requires Care

Tree Identification: Bole/stem form is buttressed

Comments: General finishing qualities are rated as good

Blunting Effect: Blunting effect on machining is severe

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Cutting Resistance: Gum-Up

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Fairly Difficult to Very Difficult, Pre-Boring Recommended

Planing: Fairly Easy to Very Easy

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Readily

Routing recessing: Fairly Easy to Very Easy

Sanding: Fairly Easy to Very Easy

Screwing: Fairly Difficult to Very Difficult, Pre-boring recommended; Turning: Fairly Easy to Very Easy

Polishing: Fairly Easy to Very Easy;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 817 kg/m3
Bending Strength 954 1473 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 752 kg
Impact Strength cm
Shearing Strength 109 kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 801 641 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 13576 20956 psi
Density 51 lbs/ft3
Hardness 1658 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 1560 psi
Stiffness 2167 2494 1000 psi
Weight 50 40 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 10 %

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

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchDalziel, J.M.,1937,The Useful Plants of West Tropical Africa,Crown Agents for the ColoniesIrvine, 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, IbadanSallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSavill, P.S., Fox, J.E.D.,1967,Trees of Sierra LeoneTakahashi, 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)