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MERSAWA (Anisoptera costata)
Nombre comercial
Mersawa
Nombre científico (con autor)
Anisoptera costata Korth
Familia
Dipterocarpaceae
Nombres Comunes
Venven (Vietnam); Mersawa (Netherlands); Mersawa (Germany); Phdiek (Cambodia); Krabak (United Kingdom); Palosapis (Philippines); Mersawa (Malaysia); Krabak (Netherlands); Krabak (Italy); Krabak (Spain); Krabak (United States of America); Krabak (Thailand); Pengiran (Sabah); Mersawa (Indonesia); Krabak (France); Krabak (Germany); Mersawa (Papua New Guinea); Kaunghmu (Myanmar); Pik (Thailand)
Nombres científicos sinónimos (con autores)
Anisoptera minadanensis Foxw.; Anisoptera marginatoides Heim; Anisoptera cochinchinensis Pierre
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a large to very large tree up to 50 m tall. The bole is cylindrical and branchless for up to 35 m and up to 150 cm in diameter, with few buttresses of up to 4 m high and spreading out up to 2.5 m, continuing up to the bole as ribs up to 10 m high.
Hábitat natural
A large tree of semi-evergreen dipterocarp, evergreen and humid lowland forest, which occurs on premium land for conversion to agriculture.
Distribución natural
It is widely distributed in Indo-China, Thailand, Sabah and Indonesia.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vestured pits. Vessels per mm2 5 to 20. Vascular/vasicentric tracheides present. Simple perforation plates. Intervessel Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma scalariform. Larger rays more than 4 seriate. Sheath cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with distinctly bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
It has resinous odor when fresh, but without characteristic taste or odor when dry.
Color
The sapwood is from light yellow to pale orange yellow when fresh and often can only be distinguished by blue stain. The heartwood darkens to light golden brown.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
It is not always straight, occasional mild spiral growth.
Veta
The texture is medium coarse with tyloses.
Durabilidad Natural
The natural durability ranges from moderate to perishable. It is rapidly attacked if unprotected.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
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: 0.05
Dificultad para impregnar
The sapwood is treatable, the heartwood may be moderately resistant to very resistant to impregnation.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.61
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.67
Contracción Tangencial Total (Saturado hasta anhidro) (%)
10.0
Contracción Radial Total (Saturado hasta anhidro) (%)
3.8
Defectos por secado
Ease of Drying: Seasoning is reported as good. Drying Defects: Risk of slight checking or twisting.
Calendario de Secado
UK-E; US-T6-D2
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.6
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
812
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
462
Cizallamiento radial CH12% (kgf/cm²)
75
Dureza Janka (lados) CH12% (kgf)
359
Dureza Janka (extremos) CH12% (kgf)
338
TRABAJABILIDAD
Aserrado
The cutting resistance can be reduced by using correct saw profiles and specially hardened saw teeth. Stellite tipped saws are necessary.
Corte de chapa rotativa
Peeling yields good quality veneer, although the veneer dries slowly and with slight buckling.
Chapa tranchada
Peeling yields good quality veneer, although the veneer dries slowly and with slight buckling.
Pérdida de filo_romado
It has a severe blunting effect on the cutting tools.
Maquinado general
It is easy to work, but if it interlocked grain is present sharp cutters are essential.
Cepillado
The planed surface is smooth when sharp tools are used.
Taladrado
Boring of this species is reported to be easy.
Clavado
Nailing properties are good.
Encolado
It has a good behavior in gluing.
Lijado
Wood of this species is easy to sand.
Acabado
Wood of this species is easy to finish.
Sacar lustre
Wood of this species is easy to polish.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, beams, boards, flooring, frames, FURNITURE AND CABINETS, PLYWOOD AND VENEER, PACKING, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, boat deck, OTHER AND MUSICAL INSTRUMENTS, handicrafts, coffin
VIVIENDA GENERAL
- 10 - Silica in Timbers
vigas
- 11 - Prospect: The wood database
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
Marcos
- 16 - Woods of the World
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
PALLETS_EMBALAJES
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
CONTENEDORES
- 50 - Properties of imported tropical woods
Duelas toneles
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
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
Botes
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Botes_cubierta
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Ataúd
- 78 - Amazonian Timbers for the International Market
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