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Assa-mingongAssa-mingong
Assa-mingong (Dacryodes edulis)

Family: Burseraceae

Common names: Assa-mingong, Belemena mai, Diganga, Dimena, Eyomediome, Igaganga, Ollem, Ossabel, Ossamvegne

Distributed in: Angola, Cameroon, Gabon, Nigeria, Zambia (Africa)

Common uses: Boat building (general), Flooring, Furniture, Joinery, Light construction, Millwork, Plywood, Poles, Pulp/Paper products, Railroad ties, Vehicle parts, Veneer: decorative

Tree size: Tree height is 10-20 m

Colors: the heart isPurple, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isWavy, the textureVery fineand the lusterMedium

Natural durability: Susceptible to marine borer attack, Very durable

Kiln Schedules: Dry at a slow speed

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Checking, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is not buttressed

Comments: General finishing qualities are rated as good

Blunting Effect: High to severe

Boring: Fairly difficult to very difficult

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Moderate to saw

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Difficult to Very Difficult

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

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

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Moderate working qualities

Routing recessing: Fairly Difficult to Very Difficult

Sanding: Good sanding finish

Steam bending: Unsuitable

Screwing: Pre-boring recommended, Very Good to Excellent Results; Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent; Staining: Fairly Easy to Very Easy; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 576 kg/m3
Bending Strength 789 1223 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 451 kg
Impact Strength cm
Shearing Strength 85 kg/cm2
Stiffness 95 110 1000 kg/cm2
Tangential Shrinkage 8 %
Radial Shrinkage 4 %
Weight 560 448 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 11230 17405 psi
Density 36 lbs/ft3
Hardness 995 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 1221 psi
Stiffness 1358 1568 1000 psi
Weight 35 28 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 8 %
Volumetric Shrinkage 12 %

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

Bois et Forets des Tropiques,1947,Ozigo - Pachylobus bultneri,Bois et Forets des Tropiques,No.3,pp43-6Bois et Forets des Tropiques,1957,Igaganga - Dacryodes edulia,Bois et Forets des Tropiques,No.52,pp17-20Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentFrance - C.T.F.T.,1960,Resultats des Observations et des essais effectues au CTFT sur Igaganga,C.T.F.T.,Information Technique, No.78Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished dataLebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Sallenave, P.,1964,Proprietes Physiques et Mecaniques des Bois Tropicaux (Premier Supplement,C.T.F.T. Publ.,no.23Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7White, F.,1962,Forest Flora of Northern Rhodesia,O.U.P. London
*Come interpretare i dati (manleva su eventuali imprecisioni)