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DOUSSIé (Afzelia pachyloba)
Nombre comercial
Doussié
Nombre científico (con autor)
Afzelia pachyloba Harms
Familia
LEGUMINOSAE
Nombres Comunes
Pau conta (Guinea-Bissau); Afzelia (United States of America); Afzelia (Germany); N'kokongo (Congo); M'banga (Cameroon); N'kokongo (Angola); Azodau (Côte d`Ivoire); Lingue (Côte d`Ivoire); N`kokongo (Congo); Doussie (Cameroon); M`banga (Cameroon); N`kokongo (Angola); Uvala (Angola); Bolengu (Zaire); Chanfuta (United States of America); Afzelia (United Kingdom); Mkora (Tanzania); Mbembakofi (Tanzania); Kpendei (Sierra Leone); Lingue (Senegal); Chanfuta (Portugal); Apa (Nigeria); Aligna (Nigeria); Mussacossa (Mozambique); Chanfuta (Mozambique); Pauconta (Guinea-Bissau); Papao (Ghana)
Nombres científicos sinónimos (con autores)
Afzelia zenkeri Harms; Afzelia caudata Hoyle; Afzelia brieyi De Wild.
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It reaches heights of 26 to 40 m, with a diameter up to 100 to 170 cm and more. The boles are clear, up to 10 to 16 m in length. Large irregular buttresses are sometimes present.
Hábitat natural
Afzelia pachyloba occurs in dense evergreen forests. The tree reaches its best development on moist sites. It is known or inferred that the harvesting of specimens from the wild for international trade has, or may have, a detrimental impact on the species
Distribución natural
West and Central Africa, from Guinea 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 200 micras or more (large). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma lozenge-aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). 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 whitish to pale yellow, it has a thickness of 2 to 5 cm. The heartwood is reddish brown, it is clearly demarcated.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
6
Grano
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Veta
The wood is typically coarse in texture.
Durabilidad Natural
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.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Internal growth stresses
Residual stresses are reported to be absent.
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)
0.6708647894
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.75
Contracción Tangencial Total (Saturado hasta anhidro) (%)
4.9
Contracción Radial Total (Saturado hasta anhidro) (%)
3.3
Calendario de Secado
FR-6
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.5
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1142
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
178976
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
735
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
104
Cizallamiento radial CH12% (kgf/cm²)
81
Dureza Janka (lados) CH12% (kgf)
700
Dureza Janka (extremos) CH12% (kgf)
788
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
Needs pre-coating.
Doblar al vapor
This species can be used for steam bending.
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, CONTAINERS, cooperage, NAVAL CONSTRUCTION, boats, boat hulls, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, shingle
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
Duelas toneles
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Botes
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Botes_cascos
- 57 - Estadísticas de Aprovechamiento, Exportación y comercialización Nacional de Productos Forestales
Botes_cubierta
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Puertos_estantería
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Shingles
- 77 - Amazonian Timbers, Characteristics and Utilization Volume I; Tapajós National Forest
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