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MELUNAK (Pentace burmanica)
Nombre comercial
Melunak
Nombre científico (con autor)
Pentace burmanica Kurz
Familia
TILIACEAE
Nombres Comunes
Thethet; Takothet; Kathitka; Daeng amae; Burma mahogany (Myanmar); Kashit (Myanmar); Sisiat pluak (Thailand); Burma mahogany (United States of America); Burma mahogany (United Kingdom); Tassit (Cambodia); Daeng-samaet (Thailand); Thitka (Myanmar); Takalis (Sabah); Melunak (Malaysia); Sisiet (Cambodia); Pinang (Indonesia)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a medium-sized to fairly large tree up to 40 m tall. The bole is straight, up to 100 cm in diameter.
Hábitat natural
Pentace burmanica is reported in lowland evergreen forests up to 300 m of altitude.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Occasionally tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits small, 7 micras or less. Axial parenchyma in marginal or in seemingly marginal bands. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma storied. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays storied. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with simple to minutely bordered pits. Fibers storied.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
It has sour odor, particularly noticeable when freshly sawn.
Color
The sapwood varies from straw-colored to pale reddish brown. The heartwood darkens on exposure to golden or red brown, somewhat like mahogany.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
4
Grano
It is usually shallowly to deeply interlocked.
Veta
The texture is medium, tyloses are reported.
Brillo
It is a lustrous wood.
Durabilidad Natural
The natural durability is from durable to moderate and susceptible to the fungi and insect attack.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
4
Contenido de sílice
Silica Content: It is non-siliceous. Silica Value: 0
Dificultad para impregnar
The heartwood is reported to be very difficult to treat with preservatives.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.58
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.64
Contracción Tangencial Total (Saturado hasta anhidro) (%)
7.0
Contracción Radial Total (Saturado hasta anhidro) (%)
4.2
Defectos por secado
Kiln Schedules: Kiln drying from green condition to 12% moisture content takes 9 to10 days.
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)
895
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
108187
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
494
Cizallamiento radial CH12% (kgf/cm²)
110
Dureza Janka (lados) CH12% (kgf)
534
Dureza Janka (extremos) CH12% (kgf)
692
TRABAJABILIDAD
Aserrado
Sawing of this species is reported to be rather easy.
Corte de chapa rotativa
After steaming it is reported to peel well.
Chapa tranchada
After steaming it is reported to peel well.
Maquinado general
Sloping grain may cause tearing, it tends to splinter rather easily.
Cepillado
Planing operations are good to fair, interlocked grain may cause tearing in radial faces.
Torneado
30
Taladrado
Boring of this species is reported to be easy.
Clavado
It is easy to nail.
Encolado
This species is easy to glue.
Acabado
Filling is necessary.
Facilidad para herramientas manuales
It is easy to work with hand tools.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
VIVIENDA GENERAL
- 10 - Silica in Timbers
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
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
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
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
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
OTROS E INSTRUMENTOS MUSICALES
- 63 - Madeiras do Brazil II
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molduras
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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