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
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| 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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