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CORDIA (Cordia dichotoma)
Nom commercial
Cordia
Nom scientifique (avec auteur)
Cordia dichotoma G. Forst.
Famille
BORAGINACEAE
Noms communs (pays)
Viri; New Guinea cordia; Guma; Anonang-bakir; Kendal (Indonesia); Toleolo (Indonesia); Mandong (Thailand); Nunang (Indonesia); Nunang (Borneo); Man khok (Laos); Thanat (Myanmar); Sebasten tree (Myanmar); Cordia (Papua New Guinea); Sekendal (Malaysia); Anonang (Philippines)
Synonymes du nom scientifique (avec auteurs)
Varronia sinensis Lour.
DESCRIPTION DE L'ARBRE
Description botanique
It is a small to medium-sized tree up to 25 m tall. The bole is up to 60 in diameter.
Habitat naturel
Cordia dichotoma is common in coastal hills, inland fringes of mangroves and also in inland primary and secondary forests, up to 700 m of altitude.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits medium, 7 to 10 micras. Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Prismatic crystals in non-chambered axial parenchyma cells. Two cells per parenchyma strand. Rays less than 4 per mm (rare). Ray height more than 1 mm. Sheath cells. Prismatic crystals in the ray 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.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is pale brown to dark brown, non distinct from the sapwood.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
This species is reported to have typically straight or interlocked grain.
Texture
The texture varies from medium to coarse.
Durabilité naturelle
It is reported to have low durability against fungi and insects.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Résistance à l'imprégnation
The heartwood is impermeable to preservatives, even when using pressure treatments.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.43
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.46
Retrait tangentiel total (saturé à 0%TH) (%)
6.4
Retrait radial total (saturé à 0%TH) (%)
2.5
Défauts dus au séchage
Ease of Drying: Seasoning is rated as difficult. Drying Defects: There is a tendency to split slightly along the broad rays.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.6
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
662
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
87175
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
428
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
66
Dureté Janka (latérale) 12%TH (kgf)
246
OUVRABILITÉ
Sciage
This species is easy to saw.
Usinage
Wood processing is reported to be easy.
Finissage
It has a good finishing.
Compatibilité avec outils manuels
Response to hand tools is reported to be good.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, FURNITURE AND CABINETS, TOOLS, tool handles, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Outils_manches
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
AUTRES ET INSTRUMENTS DE MUSIQUE
- 63 - Madeiras do Brazil II
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