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MUTENYE (Guibourtia arnoldiana)
Nom commercial
Mutenye
Nom scientifique (avec auteur)
Guibourtia arnoldiana J.Leon.
Famille
LEGUMINOSAE
Noms communs (pays)
Tropical oliver (United Kingdom); Benzi (Congo); M'penze (Angola); Tropical oliver; Oliver walnut; Ntene; Non-eyen; M`benge; Libenge; Kouan; Kerazingo; Essingang; Bubinga; Olive walnut (United Kingdom); M`penze (Angola); Mbenge (Zaire); Mutenye (Zaire); Benge (Zaire)
Synonymes du nom scientifique (avec auteurs)
Copaifera arnoldiana Th. & H. Dur.; Copaiba arnoldiana De Wild. & T. Durand; Copaiba arnoldiana De Wild. & Th. Dur.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 50 m. The bole is generally low buttressed, and occasionally fluted, up to 20 m in length. The trunk diameter attains about 120 to 150 cm.
Habitat naturel
Guibourtia arnoldiana occurs in evergreen and deciduous forests.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Axial parenchyma aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 ce 4 to 10 rays per mm (medium). Rays non-storied. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is greyish white, it has a thickness of 5 to 8 cm. The heartwood is yellowish brown to brown, with dark striping or reddish tinge, it is clearly demarcated. The silver figure is fine.
Index de Teinte (1 = Noir, 7 = Jaune clair)
3
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
Texture is usually fine to medium.
Luster
The wood surface is described as low in luster.
Durabilité naturelle
Moderately durable to decay. Without preservative treatment, this species can be used only under risk of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Moderately resistant to termites attack
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
3
Tensions internes de croissance
Residual stresses are reported to be absent.
Teneur en silice
Silica Content: It is reported to have a negligible amount of silica. Contents over 0.05% may affect wood processing. Silica Value: 0.01
Résistance à l'imprégnation
Difficult to treat with only a low penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.70
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.79
Retrait tangentiel total (saturé à 0%TH) (%)
8.7
Retrait radial total (saturé à 0%TH) (%)
5.0
Défauts dus au séchage
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Calendrier de séchage en séchoir recommandé
FR-9
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.7
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1409
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
216585
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
810
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
118
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
98
Dureté Janka (latérale) 12%TH (kgf)
779
Dureté Janka (extrémités) 12%TH (kgf)
857
OUVRABILITÉ
Sciage
Sawing of this species requires powerful equipment.
Coupe de placage de déroulage
Suitable for slicing.
Placage tranche
Suitable for slicing.
Effet d'émoussement
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Usinage
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Tournage
30
Perçage
Moderately easy; tools must be cautiously sharpened.
Mortaisage
Moderately easy; tools must be cautiously sharpened.
Clouage
Pre-boring is necessary.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Cintrage à la vapeur
This species can be used for steam bending.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Solives
- 12 - Tropical timbers of the world. Part I-Tropical American Species
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
Parquets
- 15 - Empire Timbers
Cadres
- 16 - Woods of the World
Marches
- 17 - Tree Conservation Database
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
Accessoires en bois
- 19 - Silica in Timbers
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
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
Ornements
- 31 - Embassy of Colombia in Japan
Ornements
- 32 - Embassy of Cote d`Ivoire in Japan
Manches de couverts
- 33 - Embassy of Gabon in Japan
Formes à chaussures
- 34 - Embassy of Indonesia in Japan
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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