OGUOMO (Lecomtedoxa klaineana)
Nombre comercial
Oguomo
Nombre científico (con autor)
Lecomtedoxa klaineana Dubard
Familia
SAPOTACEAE
Nombres Comunes
Okolanguma (Gabon); Oguomo (Equatorial Guinea); Okolangouma
Nombres científicos sinónimos (con autores)
Mimusops klaineana Pierre ex Engl.
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The tree reaches a height of more than 50 m. The bole is straight, cylindrical and tall. The trunk diameter attains 100 to 150 cm.
Hábitat natural
Lecomtedoxa klaineana occurs often in large populations, mainly in the alluvial areas.
Distribución natural
Habitat is almost exclusively restricted to Gabon.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Occasionally vessels in diagonal and/or radial pattern. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Tyloses thin walled. Tyloses common. Non-vestured pits. Vessels per mm2 6 to 10 (mediu 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 in narrow bands on lines up to 3 cells wide. Axial parenchyma bands ove 4 to 10 rays per mm (medium). 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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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 white. The heartwood is red-brown, it is clearly demarcated.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
3
Grano
Straight or interlocked, sometimes with an influence on further processing operations. Interlocked grain is high but not frequent.
Veta
The wood is typically medium in texture.
Brillo
This species is low in luster.
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.
Contenido de sílice
Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.03
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)
0.85
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.98
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.4
Contracción Radial Total (Saturado hasta anhidro) (%)
6.4
Defectos por secado
Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of distortions when interlocked grain is present. Kiln Schedules: The kiln schedule has been tested.
Calendario de Secado
FR-13
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)
1501
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
206927
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
829
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
122
Cizallamiento radial CH12% (kgf/cm²)
137
Dureza Janka (lados) CH12% (kgf)
1207
Dureza Janka (extremos) CH12% (kgf)
1215
TRABAJABILIDAD
Aserrado
Sawing of this species requires powerful equipment.
Corte de chapa rotativa
Not suitable for veneering.
Chapa tranchada
Not suitable for veneering.
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. It is recommended to use special tools for cutting.
Cepillado
Moderately easy; tools must be cautiously sharpened.
Moldurado
Moderately easy; tools must be cautiously sharpened.
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
Difficult to glue because of high density.
Lijado
Difficult to obtain very good results because of interlocked grain.
Sacar lustre
Can be polished without surface preparation.
Facilidad para herramientas manuales
Working with hand tools is difficult.
Usos Reportados
USOS FINALES (RESUMEN)
EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, CONTAINERS, truck bodies, truck flooring
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Poste de palizada
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VIVIENDA GENERAL
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vigas
- 11 - Prospect: The wood database
Viguetas
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Tablas
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Pisos
- 14 - Handbook of Hardwoods
Parquet
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Marcos
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Carrocería de camión
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Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
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