BUBINGA (Guibourtia demeusei)
Nombre comercial
Bubinga
Nombre científico (con autor)
Guibourtia demeusei J.Leon.
Familia
LEGUMINOSAE
Nombres Comunes
Essingang (Cameroon); Binbinga (Cameroon); Waku; Ovang; Okweni; Ngulupang; Mutenye; Lusase; Lukunfu; Lianu; Kasasesase; Irun-nduk; Gum copal; Gabon kevazingo; Essingang; Eban; Cameroons gum copal; Buvenga; Ebana (Gabon); Akume (United States of America); Waka (Zaire); Kevazingo (Gabon); Oveng (Equatorial Guinea); Bubinga
Nombres científicos sinónimos (con autores)
Copaifera laurentii De Wild.; Copaifera demeusei Harms
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The tree reaches a height of 25 to 30 m. The bole is irregular, up to 20 m in length. The trunk diameter attains 100 cm and is usually buttressed. Log is banned for international trading.(Cameroon)
Hábitat natural
Guibourtia demeusei occurs along the coastal area of tropical Africa.
Distribución natural
West Africa and in tropical Central Africa.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits similar to intervessel pits in 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.
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Foto macroscópica de la madera, plano tangencial
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Foto microscópica sección transversal de la madera
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is whitish, it has a thickness of 2 to 8 cm. The heartwood is red-brown or pinkish brown with purple veins, it is clearly demarcated. The silver figure is fine.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
4
Grano
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Veta
This species is reported to have a fine to medium texture.
Brillo
This wood is commonly of low luster.
Durabilidad Natural
Durable to decay; this species can be utilized without preservative treatment for exterior joinery or similar uses. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Internal growth stresses
For this species no growth stresses are reported.
Contenido de sílice
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
Dificultad para impregnar
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.92
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
1.07
Contracción Tangencial Total (Saturado hasta anhidro) (%)
10.3
Contracción Radial Total (Saturado hasta anhidro) (%)
5.1
Defectos por secado
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks and distortions. Kiln Schedules: The kiln schedule has been tested.
Calendario de Secado
FR-9
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.0
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1800
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
259570
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
888
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
134
Cizallamiento radial CH12% (kgf/cm²)
178
Dureza Janka (lados) CH12% (kgf)
1448
Dureza Janka (extremos) CH12% (kgf)
1404
TRABAJABILIDAD
Aserrado
Sawing of this species requires powerful equipment.
Corte de chapa rotativa
Suitable for slicing.
Chapa tranchada
Suitable for slicing.
Pérdida de filo_romado
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Maquinado general
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Cepillado
Moderately easy; tools must be cautiously sharpened.
Moldurado
Easy; no particular problems.
Torneado
30
Taladrado
Easy; no particular problems.
Escopleado, caja y espiga
Easy; no particular problems.
Clavado
Pre-boring is necessary.
Encolado
Difficult to glue because of the extracts content.
Lijado
Easy to perform; it gives good results.
Sacar lustre
Can be polished without surface preparation.
Facilidad para herramientas manuales
Working with hand tools is difficult.
Usos Reportados
USOS FINALES (RESUMEN)
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, OTHER AND MUSICAL INSTRUMENTS, handicrafts
VIVIENDA GENERAL
- 10 - Silica in Timbers
vigas
- 11 - Prospect: The wood database
Viguetas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Tablas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Pisos
- 14 - Handbook of Hardwoods
Parquet
- 15 - Empire Timbers
Marcos
- 16 - Woods of the World
Peldaños
- 17 - Tree Conservation Database
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
Accesorios de madera
- 19 - Silica in Timbers
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Muebles finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
chapa decorativa
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneado
- 30 - Embassy of Honduras in Japan
artículos torneados
- 31 - Embassy of Colombia in Japan
Artículos torneados
- 32 - Embassy of Cote d`Ivoire in Japan
mangos de cuchillos
- 33 - Embassy of Gabon in Japan
Hormas zapato
- 34 - Embassy of Indonesia in Japan
Carrocería de camión
- 53 - Timbers of the New World
Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
artesanía
- 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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