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RENGAS (Gluta wallichii)
Nom commercial
Rengas
Nom scientifique (avec auteur)
Gluta wallichii (Hook.f.) Ding Hou
Famille
ANACARDIACEAE
Noms communs (pays)
Rengas (United States of America); Rengas merah (Indonesia); Rengas (United Kingdom); Thitsi (Myanmar); Rengas perau (Indonesia); Rengas pendek (Indonesia); Rak (Thailand); Rengas (Sweden); Son (Vietnam); Borneo rosewood (United Kingdom); Rengas (Spain); Rengas (Netherlands); Rengas (Malaysia); Gluta (India); Rengas (France); Rengas (Italy); Rengas (Indonesia); Rengas (Sarawak); Rengas betul (Indonesia); Rengas (Germany)
Synonymes du nom scientifique (avec auteurs)
Melanorrhoea woodsiana Scort. Ex King; Melanorrhoea wallichii Hook.f.; Melanorrhoea maingayi Hook.f.
DESCRIPTION DE L'ARBRE
Description botanique
It is a large evergreen tree, up to 45 m tall and 90 cm in diameter. Buttresses up to 4 m high are reported. This species yields a latex which is made into black lacquer, it is also poisonous and causes severe skin irritation.
Habitat naturel
It is widely distributed in mixed dipterocarp forests and swamp forests, up to 1,000 m of altitude. In Malaysia it is common on hillsides, in Sumatra it is co-dominant in peat swamp forests.
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 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Rays less than 4 per mm (rare). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with distinctly bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is clearly differentiated, white to pale yellow. The heartwood is dark reddish brown or deep blood red shiny marked with dark streaks.
Index de Teinte (1 = Noir, 7 = Jaune clair)
5
Grain
It is partly straight, partly wavy, interlocked.
Texture
Texture is mostly fine to medium.
Luster
The wood surface is moderate in luster.
Durabilité naturelle
The sapwood rapidly discolors and attacked by insects if unprotected.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
4
Résistance à l'imprégnation
It is difficult to impregnate.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.60
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.66
Défauts dus au séchage
Ease of Drying: Air seasoning is reported without degrade. Boards of 13 mm and 38 mm thick take respectively 2.5 months and 3.5 months to air dry.
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
OUVRABILITÉ
Sciage
Cutting resistance is generally low.
Coupe de placage de déroulage
For good results in slicing, steaming is required.
Placage tranche
For good results in slicing, steaming is required.
Usinage
It is easy to machine.
Tournage
30
Clouage
This species is reported to have a good nailing behavior.
Collage
The timber is reported to glue well.
Finissage
Wood of this species is easy to finish.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, flooring, FURNITURE AND CABINETS, luxury furniture, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, TOOLS, tool handles, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Planchers
- 14 - Handbook of Hardwoods
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles luxe
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
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)
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.)
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