< Retour ABURA/BAHIA (Hallea stipulosa) Version imprimable
ABURA/BAHIA (Hallea stipulosa)
Nom commercial
Abura/Bahia
Nom scientifique (avec auteur)
Hallea stipulosa Leroy
Famille
RUBIACEAE
Noms communs (pays)
Mboi (Sierra Leone); Abura (Nigeria); Subaha (Ghana); Bahia (Côte d`Ivoire); Bahia (France); Mvuku (Zaire); Elelom Nzam (Gabon); Elelon (Equatorial Guinea); Vuku (Congo); Elolom (Cameroon); Nzingu (Uganda); Nzingu (Zambia); Mivuko (Angola); Yowi; Yar-yar; Ya-ya; Wuwoko; Wowovoko; Vuku; Voukou; Uwen; Ugbodokossa; Uburn; Ubura; Ubolu-mili; Tileul d`afrique; Supuya; Subosema; Subaya; Subaha; Songwa; Sofo; Powo; Popoe; Popo; Poplar; Pope; Poboi; Ovbevbe; Oo; Ohombe; Ogouwa; Obul; Obol; Obi; Nzingu; Mvuku; Munyamaizi; Munga; Muho; Moukonia malamba; Mboroagalaga; Mboi; Maluku; Malucu; Maloucou; M`boy; Louambo; Kwo-kwo; Kpowo; Kpoo; Kofo; Kechi lebet; Iluku; Idabakoror; False opepe; Ewe; Eti-ayip; Elilom; Eben; Ebar; Eba; Dong; Burokossa; Bulokossa; Bopi-le; Boh; Boei; Bo; Beya; Beiya; Baya; Bahia; Ba; Am-bop; Akpakosso; Agidilif; African linden; Afop zam; Abura
Synonymes du nom scientifique (avec auteurs)
Nauclea stipulosa DC.; Mitragyna stipulosa (DC.) Kuntze; Mitragyna macrophylla (Perr. & Lepr. ex DC.) Hiern
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 35 m, it often has short, thick buttresses. The trunk diameter attains 70 cm.
Habitat naturel
Hallea stipulosa widespread and important source of timber which occurs most commonly in swampy areas. It is dominant in swamp forests, rain forests and along lake shores.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Vestured pits. Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits medium, 7 to 10 mi Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Non-crystals in axial parenchyma cells. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Larger rays more than 4 seriate. Occasionally silica bodies in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with distinctly bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is pink beige to pinkish brown, it is not clearly demarcated. The silver figure is fine.
Index de Teinte (1 = Noir, 7 = Jaune clair)
5
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
The wood is mostly fine in texture.
Luster
Timber of this species is low in luster.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack. Heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Tensions internes de croissance
No growth stresses are reported in this species.
Teneur en silice
Silica Content: It is reported to have silica. Contents over 0.05% may affect wood processing. Silica Value: 0.23
Résistance à l'imprégnation
Moderately easy to treat with a partial penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.57
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.62
Retrait tangentiel total (saturé à 0%TH) (%)
9.7
Retrait radial total (saturé à 0%TH) (%)
4.8
Défauts dus au séchage
Ease of Drying: Drying is moderately easy; some particular care is needed. 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-3
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.0
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)
865
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
134542
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
486
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
60
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
80
Dureté Janka (latérale) 12%TH (kgf)
480
Dureté Janka (extrémités) 12%TH (kgf)
583
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
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
Usinage
Possible difficulties caused by interlocked grain are reported.
Rabotage
Easy; no particular problems.
Moulurage
Easy; no particular problems.
Tournage
30
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
No particular problem.
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
Steam bending is difficult.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, joists, boards, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
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
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
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.)
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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