< Retour SAPELLI (Entandrophragma cylindricum) Version imprimable
SAPELLI (Entandrophragma cylindricum)
Nom commercial
Sapelli
Nom scientifique (avec auteur)
Entandrophragma cylindricum Sprague
Famille
MELIACEAE
Noms communs (pays)
Aboudikro (Côte d`Ivoire); Sapelli-Mahogani (Germany); M'boyo (Central African Republic); West African cedar; Ubilesan; Tshimaye noir; Scented mahogany; Sapeli; Sapele wood; Sapele mahogany; Penkua; Owuru; Odupon; Miovu; Lotue; Lifuti; Liboyo; Kwabohoro; Gold Coast cedar; Dilolo; Cedar; Bubussu; Botsife; Bibitu; Atore; Acajou sapelle; Aboudikro; Libuyu (Zaire); Sapelli (Cameroon); Sapelli-mahagoni (Germany); Sapele (United Kingdom); Muyovu (Uganda); Undianuno (Congo); Undianuno (Angola); Lifaki (Zaire); M`boyo (Central African Republic); Assie-sapelli (Cameroon); Sapele (Nigeria); Penkwa (Ghana)
Synonymes du nom scientifique (avec auteurs)
Pseudocedrela cylindrica Sprague; Entandrophragma tomentosum A. Chev. ex Hutch. & Dalz.; Entandrophragma lebrunii Staner
DESCRIPTION DE L'ARBRE
Description botanique
The tree may reach more than 50 m. The bole is straight, cylindrical and straight to 32 m in length. The trunk diameter can attain 200 cm over the broad, low buttresses. Occasionally the buttresses are absent. Log is banned for international trading.(Came
Habitat naturel
Entandrophragma cylindricum occurs in semi-evergreen and evergreen forests. It is reported on rocky ground, in lake-shore forests, deciduous forests, semi-deciduous and almost dry zones and transitional formations.
Répartition naturelle
West, Central and East Africa, from Cote d`Ivoire to Uganda.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Brown-colored deposits in heartwood vessels. Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation p Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma in discontinuous tangential lines. Occasionally axial parenchyma storied. Prismatic crystals in non-chambered axial parenchy 4 to 10 rays per mm (medium). Occasionally rays storied. Rays 1 to 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
Light and pleasant odor.
Teinte
The sapwood is pinkish grey to whitish, it has a thickness of 7 to 10 cm. The heartwood is red brown to purplish brown, it is clearly demarcated. The silver figure is fine, ripple marks.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
The grain is slightly but systematically interlocked; special care is needed when drying because of frequent risks of distortion.
Texture
The texture varies from fine to medium.
Luster
The wood 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: This timber is reported to have a negligible silica content. Silica contents over 0.05% may affect wood processing. Silica Value: 0
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)
0.62
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.69
Retrait tangentiel total (saturé à 0%TH) (%)
7.2
Retrait radial total (saturé à 0%TH) (%)
5.0
Défauts dus au séchage
Ease of Drying: Terap seasons rapidly to fairly slowly. It takes 1 to 3 months to dry 15 mm thick boards to air-dry condition. Drying Defects: It has a moderate to slight tendency to bow, cup and check.
Calendrier de séchage en séchoir recommandé
FR-9
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.4
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)
1043
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
142334
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
630
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
85
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
78
Dureté Janka (latérale) 12%TH (kgf)
592
Dureté Janka (extrémités) 12%TH (kgf)
689
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Suitable for slicing, also suitable for peeling if treated.
Placage tranche
Suitable for slicing, also suitable for peeling if treated.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Machining of this species is reportedly easy.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Rather difficult; special tools are needed.
Tournage
30
Perçage
Rather difficult; special tools are needed.
Mortaisage
Rather difficult; special tools are needed.
Clouage
Pre-boring is necessary.
Collage
Difficult to glue because of the extracts content.
Ponçage
Difficult to obtain very good results because of interlocked grain.
Polissage
Can be polished without surface preparation.
Cintrage à la vapeur
Steam bending is difficult.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, NAVAL CONSTRUCTION, boat deck, port storage
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
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
Ornements
- 31 - Embassy of Colombia in Japan
Ornements
- 32 - Embassy of Cote d`Ivoire in Japan
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires_ponts
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port entreposage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
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