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Jelutong (Dyera costulata)
Family: Apocynaceae Common names: Anjarutung, Djelutung, Gapuk, Hill jelutong, Jalutung, Jarenang, Jelutong, Jelutong burit, Jelutong paya, Jelutong-bukit, Jelutung, Jelutung bukit, Jelutung gunung, Labuai, Lebuai, Lebuia, Letung, Melabuai, Nyalutung, Nyulutung, Pantung, Pantung gunung, Pantung kapur, Pantung tembago, Pidoron, Pulut, Swamp jelutung Distributed in: Brunei, Indonesia, Malaysia (Oceania and S.E. Asia) Distribution overview: Peninsular Thailand, Peninsular Malaysia, Singapore, Sumatra, Borneo and intervening islands. The species occurs in primary evergreen lowland or hill forest, in well-drained locations up to 300 m Common uses: Boxes and crates, Building materials, Carvings, Chemical derivatives, Core Stock, Decorative plywood, Decorative veneer, Door, Drawing boards, Figured veneer, Flooring: industrial heavy traffic, Heavy construction, Interior construction, Interior trim, Joinery, Light construction, Matches, Mathematical instruments, Model airplanes, Moldings, Paneling, Particleboard, Pencil, Picture frames, Plain veneer, Plywood corestock, Plywood, Precision instruments, Pulp/Paper products, Structural plywood, Toys, Turnery, Utility plywood, Veneer, Wooden shoes, Woodwork Product sources: Jelutong has gained popularity in recent years as a choice wood for carving. It is readily available in thick sizes for that application on the North American market and can be purchased at a moderate price. Environment profile: Status has not been officially assessed
Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodPale straw, Pink.The grain isWeak (figure), the textureMediumand the lusterSlightly lustrous
Natural durability: Susceptible to marine borer attack, Very little natural resistance Odor: No characteristic taste Silica Content: Siliceous
LightInduced Color Change: Darker
Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid Kiln Drying Rate: Fairly rapid (11-17 days for boards under 32 mm, to 31-51 days for boards greater than 63 mm)
Drying Defects: Slight twist/warp, Staining Ease of Drying: Easy Tree Identification: Bole/stem form is straight Comments: General finishing qualities are rated as good General finishing qualities are rated as satisfactory Jelutong has medium density, low bending and crushing strength, and very low stiffness. Latex from the tree is used for the manufacture of chewing gum.Latex Content - The wood is reported to contain latex. Blunting Effect: Blunting effect on sawing dry wood is mild Boring: Easy
Cutting Resistance: Low resistance Gluing: Easy to glue
Nailing: Easy to nail, Holds nails well Planing: Planes well, to a good finish Resistance to Impregnation: Responds well to treatment Resistance to Splitting: Excellent
Response to hand tools: Easy to machine
Routing recessing: Routing yields good results
Sanding: Yields smooth, clean surfaces
Veneering qualities: No steaming needed during bolt preparation., Suitable for peeling Steam bending: Poor
Screwing: Easy to screw, Fairly good characteristics; Turning: Good results
Painting: Satisfactory; Polishing: Satisfactory; Staining: Stains very well; Varnishing: Very well;
Density (dry weight) = 23-30 lbs/cu. ft. 0 Shrinkage, Radial = very small 0 Hardness (side grain) = very soft 1 Bending strength (MOR) = low 1 Shrinkage, Tangential = very small 0 Shrinkage, Tangential = small 0 Modulus of Elasticity (stiffness) = very low Shearing strength (parallel to grain) = very low Max. crushing strength = medium Density (dry weight) = 31-37 lbs/cu. ft. Max. crushing strength = low Modulus of Elasticity (stiffness) = low Work to Maximum Load = very low Shrinkage, Volumetric = very small Toughness-Hammer drop (Impact Strength) = very low Shrinkage, Radial = small Max. crushing strength (stiffness) = very low Australia - N.S.W. Forestry Commission,1968,Working Properties of some Native and Imported Timbers,Forestry Commission of New South Wales, Technical Publication No.8Bond, C.W.,1950,Colonial Timbers,Sir Issac Pitman & Sons Ltd. LondonBrowne, F.G.,1950,Protection of Timber Against Powder - Post Beetles During Seasoning,Malayan Forester 3(3) pp166-7Browne, F.G.,1955,Forest Trees of Sarawak and Brunei and their Products.,Government Printing Office, Kuching, SarawakBrown, W.H.,1969,Properties and uses of Tropical hardwoods in the United Kingdom. Part 1,Nonstructural properties and uses.,Conference on Tropical hardwoods SC-5/TN-5, Syracuse UniversityBrown, W.H.,1978,Timbers of the World, No. 4 South East Asia,TRADA, Red Booklet SeriesBrush, W.D.,1944,Foreign Woods - Okoume (Aucoumea klaineana,U.S.A. Department of Agriculture Forest ServiceBurgess, P.F.,1966,Timbers of Sabah,Sabah Forest Record, no.6Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Clifford, N.,1953,Commercial Hardwoods - Their Characteristics Identification and,Utilization,Sir Isaac Pitman & Sons Ltd. LondonClifford, N.,1957,Timber Identification for the Builder and Architect,Leonard Hill (Books) LTD. LondonConstantine Jr., H. 1975. Know Your Woods - A Complete Guide to Trees, Woods, and Veneers. Revised by H.J. Hobbs. Charles Scribner's Sons, New York.Cox, H.A.,1939,A Handbook of Empire Timbers,Forest Products Research Laboratory, Princes RisboroughDesch, H. E. 1957. Manual of Malayan Timbers. Malayan Forest Records, 28(30):315-318.Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Farmer, R.H.,1972,Handbook of Hardwoods,HMSOForest Products Research Laboratory, U.K.,1945,A Handbook of Empire Timbers,Department of Scientific and Industrial Research Forest Products ResearchForest Products Research Laboratory, U.K.,1969,The Movement of Timbers,Forest Products Research Laboratory, Princes Risborough Technical Note,No.38Forests Products Research Laboratory, U.K.,1956,A Handbook of Hardwoods,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research EstablishmentFoxworthy, F.W.,1927,Commercial Timber Trees of the Malayan Peninsula,Malayan Forest Records 3France - C.T.F.T.,1962,Jelutong (Dyera costulata et Dyera lowii,C.T.F.T. Information Technique No.155HMSO.1972.Handbook of Hardwoods, 2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Her Majesty's Stationery Office, London.Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.Jackson, W.F.,1957,The Durability of Malayan Timbers,Malayan Forester,20,pp38-48Keating, 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,1Kingston, R.S.T., Risdon, C.J.E.,1961,Shrinkage and Density of Australian and other South-West Pacific Woods,C.S.I.R.O. Division of Forest Products Technological Paper No.13Kline, M. 1987. Dyera costulata - Jelutong. In A Guide to Useful Woods of the World, Flynn Jr., J.H., Editor. King Philip Publishing Co., Portland, Maine. Page 147-148.Kukachka, B.F.,1970,Properties of Imported Tropical Woods,Forest Research Paper FPL 125Kumarasamy, K., Burgess, H.J.,1956,The nailing properties of 72 Malayan Timber Species,The Malayan Forester 19 pp219-26Lee, Y.H., Chu, Y.P.,1965,The Strength Properties of Malayan Timbers,Malayan Forester 28(4) pp307-19Lee, Y.H., et al,1974,Commercial Timbers of Peninsular Malaysia,Kuala Lumpur Malaysia Department of Forestry Peninsular Malaysia and,Malaysian Timber Industry BoardLee, Y.H., Lopez, D.T.,1968,The Machining Properties of some Malayan Timbers,Malayan Forester,3,pp194-210Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.Martawijaya, A., Kadir, K., Kartasujana, I.,1986,Indonesian Wood Atlas. Vol.1.,Department of Forestry Agency for Forestry Research and Development.,Bogar-IndonesiaMenon, P.K.B.,1959,The wood anatomy of Malayan timbers: commercial timbers, 3. Light,hardwoods,Malaysian Forest Research Institute Kepong, Research Pamplet, No. 27.Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressRendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonSarawak Forest Department,Trees and Timbers of Sarawak and Brunei,Forest Department, Sarawak Leaflet No.1Smythies, B.E.,1965,Common Sarawak Trees,Borneo Literature BureauSouth African Lumber Millers Assoc.,1969,Notes on some Commercially Available Hardwoods,S.A.L.M.A. Timber Info. Centre Timber Technical Guide,No.1Stadelman, R.C.,1966,Forests of South-East Asia,Wimmer Bros., Memphis TennesseeThomas, A.V., Browne, F.G.,1950,Notes on Air-Seasoning of Timber in Malaya,Malayan Forester 13(4) pp214-23Thomas, A.V.,1950,Malayan Timbers: Jelutong (Dyera costulata, Nyatah (Palaquium Spp.,Malayan Forester 13(3) pp158-63Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd editionU.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72 |
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