BERANGAN (Castanopsis acuminatissima)
Nom commercial
Berangan
Nom scientifique (avec auteur)
Castanopsis acuminatissima (Bl.) A. DC.
Famille
FAGACEAE
Noms communs (pays)
Berangan (Malaysia); New Guinea Oak (Papua New Guinea); Thite (Myanmar); Katia (Myanmar); Korcas (Thailand); Saninten (Indonesia); Malayan chestnut (Sabah); Kata (Sabah); Caoi (Vietnam)
Synonymes du nom scientifique (avec auteurs)
Quercus carlesii Hemsl.; Castanopsis longispicata Hu; Castanopsis hamata M.S. Duan; Castanopsis carlesii (Hemsl.) Hayata
DESCRIPTION DE L'ARBRE
Description botanique
It is a medium-sized to fairly large tree up to 36 m tall. The bole is often coppicing, up to 90 cm in diameter. The buttresses are up to 2 m high.
Habitat naturel
It occurs in primary or old secondary forests, often on loamy sandy soils, at a range of 300 to 2,500 m of altitude.
IDENTIFICATION DU BOIS
Description anatomique du bois
Vessels in diagonal and/or radial pattern. Vessels exclusively solitary (over 90%). Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits small, 7 micras or less. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma reticulate. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma stran 4 to 10 rays per mm (medium). Rays exclusively uniseriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent).
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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
Odeur
The freshly-sawn material has a tannin-like smell.
Teinte
The sapwood is light brown, it is often with greenish tinge. The heartwood is sharply differentiated brown to reddish brown.
Index de Teinte (1 = Noir, 7 = Jaune clair)
5
Grain
It is reasonably straight, occasionally interlocked.
Texture
The texture is from medium to coarse with dark deposits in ducts.
Durabilité naturelle
It is reported as non durable to moderately durable.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
6
Teneur en silice
Silica Content: This timber is non-siliceous. Silica Value: 0
Résistance à l'imprégnation
The sapwood is permeable, the heartwood resistant to the preservative treatment.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.52
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.57
Retrait tangentiel total (saturé à 0%TH) (%)
8.1
Retrait radial total (saturé à 0%TH) (%)
4.4
Défauts dus au séchage
Ease of Drying: Air drying is rated as good.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.8
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
968
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
157486
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
581
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
107
Dureté Janka (latérale) 12%TH (kgf)
408
OUVRABILITÉ
Sciage
Sawing of this wood is reported to be easy to fair.
Coupe de placage de déroulage
Slices and peels well when steamed. The veneer can be glued with urea-formaldehyde, producing plywood complying with the German standard.
Placage tranche
Slices and peels well when steamed. The veneer can be glued with urea-formaldehyde, producing plywood complying with the German standard.
Usinage
Machining of this species is reported to be easy.
Rabotage
Planing is easy to moderately easy. Careful planing is needed to obtain a good finishing.
Moulurage
Molding operations are reported as good to fair.
Tournage
30
Perçage
Boring operations are reported to be easy to fair.
Mortaisage
Mortising operations are rated as easy to fair.
Clouage
It can split on nailing, pre-boring is recommended.
Collage
It has a good behavior in gluing.
Ponçage
The response of this species in sanding is good to fair.
Finissage
With some care it gives a good finish.
Applications d'un revêtement
It is easy to paint or varnish.
Polissage
When polish is applied a fine and beautiful silver-grain figure often becomes visible.
Compatibilité avec outils manuels
It has a good response to hand tools.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, bridges, poles, stakes posts, HOUSING GENERAL, flooring, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, TOOLS, tool handles, agricultural tools, PACKING, pallets, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shingle
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
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
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
Placage tranché
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Tournage
- 30 - Embassy of Honduras in Japan
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
Emballage, palettes
- 48 - The strength properties of timbers
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
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Shingles
- 77 - Amazonian Timbers, Characteristics and Utilization Volume I; Tapajós National Forest
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