Batai (Albizia falcataria)
Family: Leguminosae
Common names: Albizzia, Bae, Batai, Celon sau, Ceylon sau, Jeungjing, Kayu machis, Molaccana-koroi, Molucca, Molucca albizzia, Moluccan sau, Moluccana koroi, Puah, Rare, Ratamara, Seka, Selawaku, Selawaku merah, Selawoku, Sengon laut, Sika, Sika bot, Sikas, Solomon Islands albizia, Tawa sela, Tawa selia, Tedehu dute, Wahogen, Wahogon, Wai, White albizia, White albizzia, Wikkie
Distributed in: Bangladesh, Hawaii [US], Indonesia, Malaysia, Papua New Guinea, Philippines, Solomon Islands (Oceania and S.E. Asia)
Distribution overview: Native to the eastern islands of the Indonesian archipelago (Moluccas) and New Guinea, this species has been spread to Southeast Asia from Burma to the Philippines, and introduced locally in tropical Africa and America. It seems to thrive on many soils, alluvial soils, laterites, sandy mining soil, and white sands. Ranging from Subtropical Moist to Wet through Tropical Moist to Wet Forest Life Zones, probably tolerates annual precipitation of 20 to 45 dm and annual temperature of 20 to 28C.In Hawaii the tree is planted as both an ornamental and a forest tree.
Common uses: Balusters, Barrels, Bedroom suites, Bent Parts, Boxes and crates, Building construction, Building materials, Cabinetmaking, Carvings, Casks, Chairs, Chests, Concealed parts (Furniture), Construction, Core Stock, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Farm vehicles, Fiberboard, Fine furniture, Floor lamps, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Kitchen cabinets, Light construction, Living-room suites, Matchboxes, Matches, Moldings, Office furniture, Packing cases, Pallets, Particleboard, Plywood corestock, Plywood, Pulp/Paper products, Pulpwood, Radio - stereo - TV cabinets, Shingles, Tables, Veneer, Wheels
Environment profile: Status has not been officially assessed
Tree size: Tree height is 40-50 m
Colors: the heart isYellow to golden-yellow to orange, Yellowish tanand the sapwoodWhite to yellow, Yellow.The grain isWeak figure, the textureUniformand the lusterSometimes lustrous but not always
Natural durability: Susceptible to wood staining fungal attack, Very little natural resistance
Odor: No taste
Strong odor when green which disappears after it is dried
LightInduced Color Change: Darker
Kiln Schedules: Drying (speed) is fast
Kiln Drying Rate: Naturally dries quickly
Drying Defects: Slight surface checking, Splitting
Ease of Drying: Reconditioning Treatement
Tree Identification: Bole/stem form is straight
Comments: Abnormal Wood TissueGeneral finishing qualities are rated as good
Blunting Effect: Moderate
Boring: Use very sharp cutting edges to prevent grain from tearing
Cutting Resistance: Moderate to saw
Gluing: Glues well
Mortising: Very sharp edges are required
Moulding: Requires very sharp cutting edges
Movement in Service: Requires very sharp cutting edges
Nailing: Nails hold poorly, Poor to Very Poor
Planing: Very Good to Excellent
Resistance to Impregnation: Sapwood is treatable
Response to hand tools: Very sharp cutting edges are required to produce a smooth surface
Routing recessing: Requires very sharp cutters
Veneering qualities: Veneers easily, Veneers moderately easy
Screwing: Poor to Very Poor Results
; Turning: Sharp cutting edges required
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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 |
 |
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| Item |
Green |
Dry |
Metric |
| Specific Gravity |
0,25 |
|
|
| Density |
|
336 |
kg/m3 |
| Bending Strength |
375 |
586 |
kg/cm2 |
| Crushing Strength |
165 |
284 |
kg/cm2 |
| Hardness |
|
184 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
64 |
kg/cm2 |
| Stiffness |
71 |
84 |
1000 kg/cm2 |
| Tangential Shrinkage |
5 |
|
% |
| Radial Shrinkage |
2 |
|
% |
| Weight |
336 |
256 |
kg/m3 |
| Maximum Load |
0,35 |
0,49 |
cm-kg/cm3 |
| Toughness |
|
70 |
cm-kg |
| Static Bending |
198 |
337 |
kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 5343 | 8345 | psi | | Density | | 21 | lbs/ft3 | | Hardness | | 406 | lbs | | Maximum Crushing Strength | 2348 | 4052 | psi | | Shearing Strength | | 912 | psi | | Static Bending | 2822 | 4802 | psi | | Stiffness | 1021 | 1195 | 1000 psi | | Toughness | | 61 | inch-lbs | | Work to Maximum Load | 5 | 7 | inch-lbs/in3 | | Specific Gravity | 0.25 | | | | Weight | 21 | 16 | lbs/ft3 | | Radial Shrinkage | 2 | | % | | Tangential Shrinkage | 5 | | % | | Volumetric Shrinkage | 9 | | % | |
Shrinkage, Tangential = very small Shrinkage, Radial = very small Density (dry weight) = 15-22 lbs/cu. ft. Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Bending strength (MOR) = low
Bolza, E. and N. H. Kloot.1966.The Mechanical Properties of 81 New Guinea Timbers.Technological Paper No. 41. Division of Forest Products.Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia.Bolza, E., Kloot, N.H.,1976,The Mechanical Properties of 81 New Guinea Timbers,C.S.I.R.O. Div. Building Res. Tec.Paper (2nd series) 11Bolza, E.,1975,Properties and Uses of 175 Timber Species from Papua New Guinea and West,Irian,C.S.I.R.O. Div. Building Research Report,no.34Bolza, E.,1981,The Mechanical properties of 33 Solomon Islands timbers,C.S.I.R.O. Div. Building Research. Technical Paper (2nd series) No.37Boone, R.S., C.J. Kozlik, P.J. Bois, and E.M. Wengert. 1988.Dry Kiln Schedules for Commercial Woods - Temperate and Tropical.United States Department of Agriculture, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Dilip Kumar Das,1990,Wood Anatomy of Koroi (Albizia Spp.) of Bangladesh,Bangladesh Forest Research Institute, Chittagong, Bulletin 10 Wood Anatomy,SeriesEddowes, P.J. 1977. Commercial Timbers of Papua New Guinea - Their Properties and Uses. Forest Products Research Center, Office of Forests, Department of Primary Industry, Papua New Guinea.Eddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaGerhards, C.C.,1966,Physical and Mechanical Properties of Molucca Albizzia grown in Hawaii,US Dept. of Agriculture Forest Service Forest Products Lab. Madison Wis.,Research Paper FPL_55I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingKartasujana, I., Martawijaya, A.,1973,Commercial Woods of Indonesia,Forest Products Research Institute, Department Pertanian, Bogor Indonesia,Report No.3Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1Kloot, N. H. and E. Bolza.1961.Properties of Timbers Imported into Australia.Technological Paper No. 12.Division of Forest Products, Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia.Lee, Y.H., Lopez, D.T.,1968,The Machining Properties of some Malayan Timbers,Malayan Forester,3,pp194-210Limaye, V.D. 1954. Grouping of Indian Timbers and their Properties, Uses and Suitability. Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 2, Forest Research Institute, Dehra Dun, India.Limaye, V.D. and B.R. Sen. 1953. Weights and Specific Gravities of Indian Woods.Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 4, Forest Research Institute, Dehra Dun, India.Peh, T.B. and Khoo, K.C.,1984,Timber Properties of Acacia mangium, Gmelina arborea, Paraserianthes,falcataria and their utilization aspects.,The Malaysian Forester, Vol.47, No.4, pp.285-303.Salleh, M.N. and W.C. Wong,1989,Utilization of Forest Plantation Trees.,Recent Developments in Tree,Plantations of Humid/Subhumid Tropics of Asia, 5-9 June 1989 Universiti,Pertanian Malaysia Proceedings of a Regional Symposium,Faculty of Forestry Universiti Pertanian MalaysiaSkolmen, R.G.,1974,Some woods of Hawaii, properties and uses of 16 commercial species,U.S.A. Department of Agriculture, Forest Service, Pacific Southwest Forest,and Range Experiment Station, General Technical Report PSW_8Solomon Islands, Ministry of Natural Resources, Forestry Division,1979,Solomon Islands Timbers - Minor Species,Solomon Islands, Ministry of Natural Resources, Forestry Division, Honiara,Timber Booklet 2Tamolang, F.R. and Rocafort, J.E.,1987,Physico-Mechanical Properties and Possible Uses of Eleven Plantation-Grown,Timber Species in the Philippines,FPRDI-Journal 16:1-2,75-85WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.Yoji Kikata (ed.,1991,The promotion of Lesser-known Species and Plantation-grown species,Proceedings of the International Forest Products Workshop, 14 to 15,October, 1991, Nagoya University, Japan
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