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Albizzia
Albizzia (Albizia gummifera)

Family: Leguminosae

Common names: Albizzia, Asihue, Avu, Ayinre, Bakwe kapun bongbo, Bangban, Bangbaye, Flat crown, Kasa-kasa, Kiririgwi, Kokko, Lubamba, Mapumbat, Mboromoro, Mchani-mbao, Mduruasi, Mepepe, Mfuranji, Mkenge, Mpepe, Mruka, Msame, Msarawachi, Mshai, Mtanga, Mtango, Mtsani, Mtsavia, Muanza, Mugarayense, Mugavu, Mukhonzuli, Mukuruwe, Mungerenge, Munjerenje, Mupambangoma, Murenjererje, Mushabeya, Mushebele, Mushebera, Mwethia, Niensiensi, Nongo, Okuro, Ol-geturai, Omulera, Osungu, Pampena, Platkroon, Possi, Sahati, Sakachi, Saliemo, Se, Set, Seyet, Sorai, Sorii, Uwowe, West African albizzia

Distributed in: Angola, Cameroon, Ethiopia, Ghana, Ivory Coast, Kenya, Nigeria, Sierra Leone, South Africa, Tanzania, Togo, Uganda, Zaire (Africa)

Distribution overview: A deciduous tree preferring forest margins and open forests throughout mountainous regions in Tanzania, from the coastal hills to Kilimanjaro and Kagera. It grows poorly in higher areas. It also occurs as a small tree colonizing mixed thickets and woodlands. This tree can also be found in some areas of West Africa (mostly confined to the highlands in Nigeria and Cameroon), but is most common in East Africa.

Common uses: Agricultural implements, Balusters, Barge fenders, Bedroom suites, Boxes and crates, Building construction, Building materials, Cabinetmaking, Carvings, Casks, Charcoal, Construction, Crossties, Decorative plywood, Docks, Dockwork, Domestic flooring, Drawer sides, Excelsior, Flooring, Furniture , Furniture, Handles, Harbor work, Hardboards, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Ladders , Light construction, Living-room suites, Marine construction, Millwork, Mine timbers, Moldings, Naval architecture, Novelties, Office furniture, Packing cases, Parquet flooring, Particleboard, Plywood, Poles, Posts, Pulp/Paper products, Railroad ties, Sporting Goods, Tool handles, Vehicle parts, Veneer: decorative

Environment profile: Generally secure within its natural habitat

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStriped figure, the textureMedium to coarse

Natural durability: Susceptible to insect attack, Susceptible to wood staining fungal attack

Odor: No specific smell or taste

LightInduced Color Change: None

Kiln Schedules: T6-D4 (4/4); T3-D3 (8/4) US/T6-D4 (4/4); T3-D3 (8/4) US

Kiln Drying Rate: Naturally dries slowly

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as Poor

Cutting Resistance: Low resistance to sawing

Gluing: Glues well

Nailing: Holds nails well, Very Good to Excellent

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Variable qualities

Steam bending: Moderate

Screwing: Fair to Good Results, Very Good to Excellent Results;

Polishing: Satisfactory; Staining: Finish is generally satisfactory;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,4
Density 528 kg/m3
Bending Strength 493 759 kg/cm2
Crushing Strength 285 445 kg/cm2
Hardness 283 kg
Impact Strength 71 cm
Shearing Strength 109 kg/cm2
Stiffness 68 91 1000 kg/cm2
Tangential Shrinkage 4 %
Radial Shrinkage 2 %
Weight 576 416 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 7021 10798 psi
Density 33 lbs/ft3
Hardness 626 lbs
Impact Strength 28 inches
Maximum Crushing Strength 4062 6340 psi
Shearing Strength 1560 psi
Stiffness 973 1305 1000 psi
Specific Gravity 0.4
Weight 36 26 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 4 %
Volumetric Shrinkage 11 %

Max. crushing strength = medium
Hardness (side grain) = very soft
Density (dry weight) = 31-37 lbs/cu. ft.
Bending strength (MOR) = low
Shearing strength (parallel to grain) = low
Modulus of Elasticity (stiffness) = very low
Shrinkage, Tangential = very small
Shrinkage, Radial = very small
Density (dry weight) = 23-30 lbs/cu. ft.
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Volumetric = moderate
Shrinkage, Tangential = small
Density (dry weight) = 38-45 lbs/cu. ft.
Bending strength (MOR) = medium
Density (dry weight) = 46-52 lbs/cu. ft.

Bois, P.J.,1966,The Strength Properties of Tanzania Timbers,Tanzania Forest Div. Util. Sec. Moshi Tech. Note, No.35Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchBryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. MoshiChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaForest Products Research Laboratory, U.K.,1951,Albizzia spp.,Forest Products Research Laboratory, Princes Risborough, Timber LeafletFouarge, J.,1950,Appropriation de Bois Congolais aux Besoins de la Metropole,I.N.E.A.C. Belgium Serie Technique,No.38Fouarge, J.,1953,Bois du Congo,I.N.E.A.C.France - 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. FranceGrant, D.K.S.,1934,Some Local Timbers,Tanzania Forest DepartmentGueneau, P., Gueneau, D.,1969,Proprietes Physiques et Mecaniques des Bois Malagaches,CTFT MadagascarKeay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Lebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5McCoy-Hill, M.,1956,Timbers of Tanganyika - Mfurangi, Mfuranji and Mroma,Timber Technology,64(2204, p305Murira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Pardy, A.A.,1952,Notes on Indigenous Trees and Shrubs of S. Rhodesia - Albizzia gummifera,Ministry of Agriculture and Lands S. Rhodesia Bulletin,No.1673Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Scott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1Scott, M.H.,1950,Notes on the more Important African Timbers Imported into the Union with,Special Ref. to Port. E.A. Species,Journal of the South African Forestry Association,No.19,pp18-62,[South,African Forestry Journal]Spalt, H.A., Stern, W.L.,1956,Survey of African woods 1,Tropical Woods,115(105,pp 13-38Stevens, W C,1961,Kiln Operators Handbook,HMSOTack, C.H.,1969,Uganda Timbers,Govt. Printer UgandaTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Tanzania Forest Department,1960,The Natural Durability of Local Timbers,Tanzanian Forest Dept. Tech. Note,No.14Uganda Forest Department,1969,The Shrinkage of Some Ugandan Timbers,Uganda Forestry Department Timber Leaflet,No.47WCMC.1992.Conservation Status Listing - Trees and Timbers of the World.World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya
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