< Retour BANGKAL (Neonauclea excelsa) Version imprimable
BANGKAL (Neonauclea excelsa)
Nom commercial
Bangkal
Nom scientifique (avec auteur)
Neonauclea excelsa (Blume) Merr.
Famille
RUBIACEAE
Noms communs (pays)
Klepu ketek (Indonesia); Ki saat (Indonesia)
Synonymes du nom scientifique (avec auteurs)
Nauclea obtusa Blume; Nauclea mollis Blume; Nauclea excelsa Blume
DESCRIPTION DE L'ARBRE
Description botanique
It is a small to fairly large tree, up to 40 m tall. The bole is straight, branchless for up to 20 m and 80 cm of diameter. The buttresses are absent or up to 2 m high.
Habitat naturel
Neonauclea occurs in lowland hill forests and lower montane forests, up to 1,800 m of altitude. It is a common secondary species.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Occasionally vessels of two distinct diameter classes, wood not ring-porous. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally vessels with colored dep Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Over 9 cells per parenchyma strand. Occasionally rays more than 10 per mm (abundant). Ray height more than 1 mm. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Fibers with distinctly bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is pale to bright orange or dark yellow to pink becoming paler on exposure, only distinguishable from the paler sapwood when fresh.
Index de Teinte (1 = Noir, 7 = Jaune clair)
7
Grain
The grain is interlocked, occasionally straight.
Texture
The texture is moderately fine and even, occasionally with some figure due to growth rings or pink streaks.
Luster
The wood is lustrous.
Durabilité naturelle
The wood is moderately durable to durable when exposed to the weather or in contact with the ground, very durable under cover. It is moderately resistant to termites attack.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
4
Résistance à l'imprégnation
The sapwood is permeable but the heartwood is resistant to pressure impregnation.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.71
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.80
Retrait tangentiel total (saturé à 0%TH) (%)
9.1
Retrait radial total (saturé à 0%TH) (%)
6.2
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.5
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1130
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
154500
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
593
OUVRABILITÉ
Coupe de placage de déroulage
It is reported to be useful for veneer cores.
Placage tranche
It is reported to be useful for veneer cores.
Usinage
It is easy to machine, but quarter sawn boards tend to pick up.
Tournage
30
Finissage
This species is reported to give a good finish.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, bridges, poles, stakes posts, HOUSING GENERAL, flooring, frames, FURNITURE AND CABINETS, PLYWOOD AND VENEER, cores, TURNING, TOOLS, PACKING, NAVAL CONSTRUCTION, boats
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Ponts
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Poteaux
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Piquets
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planchers
- 14 - Handbook of Hardwoods
Cadres
- 16 - Woods of the World
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
âmes (de placage)
- 27 - Embassy of Brazil in Japan
Tournage
- 30 - Embassy of Honduras in Japan
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Please Provide Information To View Producer Information