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LONGHI (Gambeya africana)
Nombre comercial
Longhi
Nombre científico (con autor)
Gambeya africana Pierre
Familia
SAPOTACEAE
Nombres Comunes
Bopambu (Zaire); Longhi (Congo); Mbebame (Gabon); Abam (Cameroon); Anandio (Côte d`Ivoire); Aningueri rouge (Côte d`Ivoire); Akatio (Côte d`Ivoire); Longui rouge (Congo)
Nombres científicos sinónimos (con autores)
Chrysophyllum africanum Baker
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The tree may reach a height of 30 m. The bole is up to 13 m in length, straight, but usually fluted, with low buttresses. The trunk diameter may be up to 130 cm.
Hábitat natural
Gambeya africana occurs in rain forests and transitional formations.
Distribución natural
West, Central Africa, from Sierra Leone to Angola.
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). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows Axial parenchyma in continuous tangential lines or fine bands. Prismatic crystals in short chains in chambered axial parenchyma cells. 5 to 8 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Occasionally silica bodies in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is paler than heartwood. The heartwood is pinkish brown to yellow-brown, it is not clearly demarcated. The silver figure is fine (barely visible).
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
Texture is usually fine to medium.
Brillo
The wood surface is described as low in luster.
Durabilidad Natural
Slightly durable to decay. This species needs preservative treatment for uses with risks of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. The heartwood is moderately resistant to termites attack.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
Internal growth stresses
No residual growth stresses are found.
Contenido de sílice
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
Dificultad para impregnar
Moderately easy to treat with a partial penetration of the preservative products.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.66
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.74
Contracción Tangencial Total (Saturado hasta anhidro) (%)
7.8
Contracción Radial Total (Saturado hasta anhidro) (%)
5.0
Calendario de Secado
FR-7
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.6
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1245
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
192945
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
682
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
94
Cizallamiento radial CH12% (kgf/cm²)
79
Dureza Janka (lados) CH12% (kgf)
681
Dureza Janka (extremos) CH12% (kgf)
771
TRABAJABILIDAD
Aserrado
It is moderately easy to saw.
Corte de chapa rotativa
Suitable for slicing, also suitable for peeling if treated.
Chapa tranchada
Suitable for slicing, also suitable for peeling if treated.
Pérdida de filo_romado
Slight blunting effect; ordinary tools can be used for sawing and machining.
Maquinado general
Machining of this species is reportedly easy.
Cepillado
Moderately easy; tools must be cautiously sharpened.
Moldurado
Moderately easy; tools must be cautiously sharpened.
Torneado
30
Taladrado
Moderately easy; tools must be cautiously sharpened.
Escopleado, caja y espiga
Moderately easy; tools must be cautiously sharpened.
Clavado
Pre-boring is necessary.
Encolado
Glues well if basic gluing technical rules are followed.
Lijado
Easy to perform; it gives good results.
Sacar lustre
Can be polished without surface preparation.
Facilidad para herramientas manuales
No particular problems.
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, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, 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
Caras
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
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
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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