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Haldu
Haldu (Adina cordifolia)

Family: Rubiaceae

Common names: Ahnau, Arsanatega, Bandaru, Bangka, Bonglong, Da-kom, Dudagu, Gao, Haldu, Hardu, Hedde, Heddi, Hedu, Hnaw, Holonda, Honangi, Kadambu, Kadawar, Kaddam, Kaim, Kalamb, Kamada, Kan Luang, Kan-luang, Kanapu, Kanu, Karam, Keli-kadam, Kem, Kolon, Komba, Kovao, Kudwal, Kurmi, Kurumba, Kwao, Kwow, Manja-kadambu, Manjakadambe, Manjalkadambai, O-aw, Paspu, Paspu kadambe, Pelpuria, Petpuria, Phurkhona, Roghu, Rudraganapu, Rudrakadapu, Shangdong, Siamese kwao, Tarachapa, Tekoe, Thaing, Tikkoe, Uaspu mundi, Yeludijamaram, Yetega, Yettega, Yongmaw

Distributed in: Bhutan, Burma, Cambodia, China, India, Indonesia, Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam (Oceania and S.E. Asia)

Distribution overview: India, Ceylon, Thailand, and Burma; scattered in mixed deciduous forests.

Common uses: Agricultural implements, Balusters, Baskets, Boat building (general), Bobbins, Boxes and crates, Brush backs & handles, Building construction, Building materials, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Concrete formwork, Construction, Cooperages, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Food containers, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles: general, Handles: woodworking tools, Hatracks, Heavy construction, Interior construction, Joinery, Kitchen cabinets, Light construction, Living-room suites, Mathematical instruments, Millwork, Mine timbers, Moldings, Musical instruments, Musical instruments: percussion, Musical instruments: piano, Musical instruments: strings, Office furniture, Paneling , Paneling, Parquet flooring, Plywood, Poles, Posts, Radio - stereo - TV cabinets, Rustic furniture, Shingles, Sporting Goods, Stairworks, Stools, Stringers, Sub-flooring, Tables , Tables, Textile equipment, Tool handles, Toys, Turnery, Vats, Vehicle parts, Veneer, Veneer: decorative

Environment profile: Globally secure

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWide sapwood, Yellow.The grain isWeak figure, the textureVery fine to fineand the lusterPronounced

Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to insect attack

Odor: No specific smell or taste

LightInduced Color Change: Darker

Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Slight twist/warp, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: Acid resistant General finishing qualities are rated as good Useful for manufacturing saunas, laboratory bench tops, and other applications where acid-resistance is needed

Carving: Good results

Cutting Resistance: Easy to saw

Gluing: Fairly Easy to Very Easy

Mortising: Very Good to Excellent

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Holds nails well, Very Good to Excellent

Planing: Very Good to Excellent

Resistance to Impregnation: Sapwood is permeable

Response to hand tools: Works well with hand tools

Sanding: Very Good to Excellent Results

Screwing: Screwing yields good results, Very Good to Excellent Results; Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,53 0,56
Density 673 kg/m3
Bending Strength 664 847 kg/cm2
Crushing Strength 372 514 kg/cm2
Hardness 488 kg
Impact Strength 48 71 cm
Shearing Strength 93 kg/cm2
Stiffness 76 96 1000 kg/cm2
Tangential Shrinkage 7 %
Radial Shrinkage 3 %
Weight 721 673 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 9446 12057 psi
Density 42 lbs/ft3
Hardness 1076 lbs
Impact Strength 19 28 inches
Maximum Crushing Strength 5304 7315 psi
Shearing Strength 1328 psi
Stiffness 1085 1374 1000 psi
Specific Gravity 0.53 0.56
Weight 45 42 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 7 %
Volumetric Shrinkage 9 %

Density (dry weight) = 38-45 lbs/cu. ft. 0
Max. crushing strength = medium
Bending strength (MOR) = low
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = very low
Shrinkage, Tangential = moderate
Shearing strength (parallel to grain) = very low
Hardness (side grain) = soft
Bending strength (MOR) = medium
Shrinkage, Tangential = large
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = low
Max. crushing strength = high
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Volumetric = small
Shrinkage, Volumetric = moderate
Shrinkage, Tangential = small
Shrinkage, Tangential = fairly large
Shrinkage, Radial = moderate
Shearing strength (parallel to grain) = medium
Resists denting and marring
Modulus of Elasticity (stiffness) = low
Heavy
Hardness = medium
Hardness (side grain) = very soft
Hardness (side grain) = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 31-37 lbs/cu. ft.
Compression strength (parallel to grain) = high
Similar in many strength properties to Teak, White Oak, and Hard Maple

Arkwright, P.,1955,Know your Timbers No. 16 Haldu (Adina cordifolia,Woodworking Industry,12(4,pp243Arkwright, P.,1966,Know your Timbers No.148 Haldu (Adina cordifolia,Woodworking Industry,23(11, p43Armstrong, F.H.,1951,Abrasion Tests on some recently introduced Hardwoods,Wood,16(5, pp90-1Boone, 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.Brown, W.H.,1978,Timbers of the World, No. 3 Southern Asia,TRADA, Red Booklet SeriesCarrapiett, J.B.,1960,Notes on ornamental timbers of Burma,Burmese Forester,10(1,pp37-53Chudnoff, 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. LondonDas, N.R., et al,1965,Data on the Natural Durability of Timber Species,Journal of Timber Development Assoc. of India,11(2,pp6-12Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Farmer, R.H.,1972,Handbook of Hardwoods,HMSOFernando, X.M.,1956,Notes on Ceylon Timbers,Ceylon Forester (N.S.,2(3,pp131-8Forest Products Research Laboratory, U.K.,1951,Albizzia spp.,Forest Products Research Laboratory, Princes Risborough, Timber LeafletForest Products Research Laboratory, U.K.,1954,Hardwoods for Industrial Flooring,Forest Products Research Laboratory, Princes Risborough, Leaflet, No.48Forest Products Research Laboratory, U.K.,1955,Kiln-Drying Schedules,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research Establishment Leaflet,No.42France - 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. FranceGamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. LondonHMSO. 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.Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.Keating, 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,1Kinns, H.E.,A Note on the Working Qualities of some Common Indian Timbers,Indian Forest Bulletin (N.S.,pp3-4Limaye. V.D.,1939,The Comparative Strengths of Some Important Indian Timbers and Their Uses.,Indian Forest Records. Utilisation. Vol.1-ALimaye, 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.Nazma,1981,A handbook of Kerala Timbers,Kerala Forest Research Institute Research Report, No.9Ng, F.S.P. (Ed,1989,Tree Flora of Malaya A Manual for Foresters Volume 4,Forest Research Institute Malaysia Ministry of Primary IndustriesPatterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressPearson, R.S., Brown, H.P.,1932,Commercial Timbers of India,Govt. Printer Calcutta,2 volsPuri, Y.N., et al,1968,Natural Decay of Indian Timbers 5,Indian Forester,94(8, pp609-619Purkayastha, S.K.,1982,Indian woods: Their identifications, properties and uses, Vol. IV,Myrlacene to Symploceae,Controller of Publications, New DelhiRendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonSallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSekhar, A.C.,1967,Some Indian Timbers Equivalent to Foreign Timbers,Van Vigyan 5(1&2,pp18-24Sharma, S.N.,1962,Experiments on the High Temperature Drying of some Indian Timbers,(Part.2,Forest Research Institute, Dehra Dun Indian Forest Bulletin No.236Suvarnasuddhi, K.,1950,Some Commercial Timbers of Thailand - Their Properties and Uses,Royal Forest Department, ThailandTewari, M.C., Jain, J.C.,1980,Utilization of Secondary Species,Journal of the National Building Organization 25(2) pp1-6Timber Development Association Ltd.,1955,World Timbers (3 Vols.,Timber Development Association Ltd.Timber Development Association,1948,Some New Timbers and Their Uses No. 34,Timber Development Association Limited, London [TRADA]Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd editionWCMC. 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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