NIOVé (Staudtia kamerunensis)
Nom commercial
Niové
Nom scientifique (avec auteur)
Staudtia kamerunensis Warb.
Famille
MYRISTICACEAE
Noms communs (pays)
M'boun (Gabon); M'bonda (Cameroon); Menga-menga (Angola); Kamashi (Zaire); Susumenga (Zaire); Menga-menga (Congo); M`boun (Gabon); Niove (Gabon); Bokapi (Equatorial Guinea)
Synonymes du nom scientifique (avec auteurs)
Staudtia stipitata Warb.; Staudtia gabonensis Warb.; Staudtia congensis Vermoesen
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 23 to 32 m. The bole is cylindrical, straight and clear to 20 m in length, sometimes with a swollen base. The trunk diameter attains 100 cm.
Habitat naturel
Staudtia kamerunensis occurs in mixed forests, in large stands, as well as in secondary forests.
Répartition naturelle
West Africa in Gabon, Cameroon, Republic of the Congo and in the Democratic Republic of the Congo.
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). Tyloses thin walled. Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Scalariform perforatio Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with simple to minutely bordered pits.
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Vue macroscopique du bois (plan tangentiel)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
Light and pleasant odor.
Teinte
The sapwood is pale yellow to orange yellow, it has a thickness of 8 cm. The heartwood is yellow brown to reddish brown, with darker streaks, it is clearly demarcated. The silver figure is medium.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
This species is usually reported to have a fine texture.
Luster
This wood is commonly of moderate luster.
Durabilité naturelle
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Tensions internes de croissance
No residual stresses are reported in this species.
Teneur en silice
Silica Content: Negligible contents of silica are found in timber of this species. Amounts over 0.05% may affect the wood processing. Silica Value: 0.01
Résistance à l'imprégnation
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.78
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.89
Retrait tangentiel total (saturé à 0%TH) (%)
6.2
Retrait radial total (saturé à 0%TH) (%)
5.1
Défauts dus au séchage
Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of distortions. Kiln Schedules: The kiln schedule has been tested.
Calendrier de séchage en séchoir recommandé
FR-11
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.2
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)
1557
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
188065
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
923
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
141
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
88
Dureté Janka (latérale) 12%TH (kgf)
987
Dureté Janka (extrémités) 12%TH (kgf)
1035
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
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 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)
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, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, boat hulls, boat deck, port storage, 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
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Navires_coques
- 57 - Estadísticas de Aprovechamiento, Exportación y comercialización Nacional de Productos Forestales
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
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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