KELEDANG (Artocarpus lanceifolius)
Nom commercial
Keledang
Nom scientifique (avec auteur)
Artocarpus lanceifolius Roxb.
Famille
MORACEAE
Noms communs (pays)
Keledang (Indonesia); Khanun pa (Thailand); Keledang (Malaysia); Bangsal (Borneo); Keledang (Borneo); Keledang (Sumatra)
DESCRIPTION DE L'ARBRE
Description botanique
It is a medium-sized to fairly large evergreen tree up to 36 m tall. The bole is straight and branchless for up to 25 m, up to 85 cm in diameter, with short buttresses.
Habitat naturel
It is fairly common in evergreen lowland or hill forests, in a range between 600 to 1,100 m of altitude.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Tyloses sclerotic. Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Inter Occasionally axial parenchyma in marginal or in seemingly marginal bands. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma winged aliform (uni or bilateral winged). 3 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Occasionally sheath cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with simple to minutely bordered pits.
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Vue macroscopique du bois (plan tangentiel)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is light yellow or straw, clearly demarcated. The heartwood is orange or olive-brown, darkening with age.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
The grain is deeply interlocked, fibrous.
Texture
The wood is typically medium in texture.
Durabilité naturelle
Pinhole borers often attack the sapwood, but the timber is resistant to termites and considerably resistant to marine borers.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
6
Tensions internes de croissance
Timber of this species contains residual stresses.
Teneur en silice
Silica Content: Silica is absent. Silica Value: 0
Résistance à l'imprégnation
The heartwood is very difficult to impregnate, sapwood absorbs preservatives readily.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.69
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.77
Retrait tangentiel total (saturé à 0%TH) (%)
6.3
Retrait radial total (saturé à 0%TH) (%)
2.9
Calendrier de séchage en séchoir recommandé
JP-25; UK-F; US-35-44
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.2
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
667
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
97
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
112
Dureté Janka (latérale) 12%TH (kgf)
771
Dureté Janka (extrémités) 12%TH (kgf)
771
OUVRABILITÉ
Sciage
Sawing of this species is difficult.
Coupe de placage de déroulage
Lamination of this species is possible.
Placage tranche
Lamination of this species is possible.
Effet d'émoussement
It is considered to have a severe blunting effect on the cutting elements.
Usinage
Interlocked grain causes problems, special cutters are required.
Rabotage
The wood can be planed to a smooth surface, but there is some picking up on the radial.
Perçage
Boring operations are fair to difficult.
Clouage
This species is reported to have a good nailing behavior.
Collage
The timber is reported to glue well.
Finissage
Finishing is difficult and the surfaces are often rough.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, poles, HOUSING GENERAL, beams, boards, flooring, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, coffin
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Poteaux
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Planchers
- 14 - Handbook of Hardwoods
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Outils_manches
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Outils_agric
- 44 - Atlas of Peruvian Woods
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
AUTRES ET INSTRUMENTS DE MUSIQUE
- 63 - Madeiras do Brazil II
Cercueils
- 78 - Amazonian Timbers for the International Market
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