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AfzeliaAfzelia
Afzelia (Afzelia pachyloba)

Family: Leguminosae

Common names: Afzelia, Aligna, Apa, Azza, Beyo, Bolengo, Doussie, Kpendei, Lingue, M'banga, Meli, Mkola, Mussacosa, N'kokongo, Papao, Pauconta, Uvala, White afzelia

Distributed in: Angola, Cameroon, Congo, Ghana, Guinea Bissau, Ivory Coast, Mozambique, Nigeria, Senegal, Sierra Leone, Tanzania, Zaire (Africa)

Distribution overview: This species occurs in Angola, Cameroon, Congo, Gabon, Nigeria and Zaire. It is a rainforest species, but may be present in the savannah and coastal forests of East Africa.

Common uses: Boat building, Building construction, Building materials, Cabin construction, Canoes, Chairs, Chemical containers, Chests, Concealed parts (Furniture), Construction, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Exterior trim & siding, Exterior uses, Factory construction, Fine furniture, Floor lamps, Flooring, Framing, Furniture , Furniture components, Furniture squares or stock, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Living-room suites, Millwork, Mine timbers, Moldings, Office furniture, Parquet flooring, Radio - stereo - TV cabinets

Product sources: Exported on a regular basis.

Environment profile: Very little threat to the survival of the species

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isRed, Reddish brownand the sapwoodWhitish, Yellow.The grain isStraight to interlocked, the textureModerately coarseand the lusterMedium

Natural durability: Very durable, Very high natural resistance

Odor: No specific smell or taste

Kiln Schedules: Schedule E (4/4) United Kingdom

Drying Defects: Shakes may become extended, Slight checking and cracking

Ease of Drying: Slowly

Comments: The wood contains a yellow dye-stuff (afzelin) which can stain textile materials under moist conditions

Blunting Effect: Moderate

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Use special attention for best results

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Pre-Boring Recommended, Pre-boring recommended

Planing: May produce some torn grain

Resistance to Impregnation: Sapwood is moderately treatable

Response to hand tools: Fairly Difficult to Difficult to Work

Sanding: Very Good to Excellent Results The material works to a smooth finish

Veneering qualities: Difficult to veneer, Not suited for plywood manufacture

Steam bending: Satisfactory


Polishing: Good; Staining: Fairly Difficult to Very Difficult; Varnishing: Surface Preparation;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,59 0,62
Density 801 kg/m3
Bending Strength 1136 kg/cm2
Crushing Strength 759 kg/cm2
Hardness 804 kg
Impact Strength 76 cm
Shearing Strength 146 kg/cm2
Stiffness 131 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load 0,77 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 16170 psi
Density 50 lbs/ft3
Hardness 1774 lbs
Impact Strength 30 inches
Maximum Crushing Strength 10809 psi
Shearing Strength 2078 psi
Stiffness 1877 1000 psi
Work to Maximum Load 11 inch-lbs/in3
Specific Gravity 0.59 0.62
Weight 66 49 lbs/ft3

Heavy
Density = high
Crushing strength = high
Compression strength (parallel to grain) = high
Bending strength (MOR) = high

Bolza, 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.HMSO.1972.Handbook of Hardwoods.2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.ITTO.1986.Tropical Timber Atlas, Volume 1 - Africa.International Tropical Timber Organization (ITTO) and Centre Technique Forestier Tropical (CTFT, 45bis, Avenue de la Belle Gabrielle, Nogent-sur-Marne Cedex, France.Keay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Lavers, G. M.1966.The Strength Properties of Timbers.Forest Products Research Bulletin, No. 50.Ministry of Technology, Her Majesty's Stationery Office, London.Lincoln, W. A.1986.World Woods in Color.Linden Publishing Co. Inc., Fresno, California.WCMC.1992.Conservation Status Listing - Trees and Timbers of the World.World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.
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