ANGUEUK (Ongokea gore)
Nom commercial
Angueuk
Nom scientifique (avec auteur)
Ongokea gore Pierre
Famille
APTANDRACEAE
Noms communs (pays)
Kouéro (Côte d`Ivoire); Boleke (Zaire); Anghëk (Gabon); Sanu (Congo); Sanou (Congo); Sanu; Sano; Olekwa; Oleko; Oleke; Okeka; Nzieke; Ngore; Nessano; Nek; N`sano; Muleku; Muketu; Moungueke; Mobengui; Limuna; Kwi; Kuwi; Kuoto; Ksin; Kouero; Kosin; Isanu; Isano; Ibeka; Gbui; Elede; Ekuzo; Dimuma dileka; Dimuma; Buleka; Bui; Bobwe; Balla-tue; Anojek; Angeuk; Boleko (Zaire); Angueuk (Gabon); Andjek (Cameroon); Andjek (Gabon)
Synonymes du nom scientifique (avec auteurs)
Ongokea klaineana Pierre; Ongokea kamerunensis Engl.; Aptandra gore Hua
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 43 m. The bole is cylindrical, straight and unbuttressed, sometimes lobed or swollen at the base. Trunk diameter attains up to 170 cm.
Habitat naturel
Ongokea gore occurs in periodically inundated areas, in river forests and mostly in rain forest.
Répartition naturelle
West and Central Africa, from Liberia to the Democratic Republic of the Congo.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Tyloses thin walled. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits coarse throughout the ray cell. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 2 seriate. Rays exclusively uniseriate. Prismatic crystals in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with distinctly bordered pits. Vessel-fiber pits similar to vessel-ray pits in size and shape.
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Vue macroscopique du bois (plan tangentiel)
-
Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is pale yellow, it is not clearly demarcated. Ribbon-like markings present on quarter-sawn faces.
Index de Teinte (1 = Noir, 7 = Jaune clair)
6
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The wood is mostly medium in texture.
Luster
The wood is described as low in luster.
Durabilité naturelle
Durable to decay; this species can be utilized without preservative treatment for exterior joinery or similar uses. Resistant to termites attack. The heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Tensions internes de croissance
For this species no growth stresses are reported.
Teneur en silice
Silica Content: This timber is reported to have a negligible silica content. 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)
0.77
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.88
Calendrier de séchage en séchoir recommandé
FR-12
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)
1095
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
159135
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
679
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
93
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
99
Dureté Janka (latérale) 12%TH (kgf)
960
Dureté Janka (extrémités) 12%TH (kgf)
1012
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
Slight blunting effect; ordinary tools can be used for sawing and machining.
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
Difficult to glue because of high density.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, crossties, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, CONTAINERS, truck bodies, truck flooring, OTHER AND MUSICAL INSTRUMENTS, handicrafts
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Traverses de chemin de fer
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
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
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
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
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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