WHITE MERANTI (Shorea bracteolata)
Nombre comercial
White meranti
Nombre científico (con autor)
Shorea bracteolata Dyer
Familia
Dipterocarpaceae
Nombres Comunes
Meranti pa`ang (Malaysia); Melapi pa`ang (Sabah); Badau betul (Sarawak); Damar kedontang (Indonesia); Bunyau (Indonesia); Meranti lapis (Malaysia); Melapi (Sabah); Lun puteh (Sarawak); Damar putih (Indonesia); White meranti (Sarawak); White meranti (United States of America); Meranti temak (Malaysia); Pendan (Thailand); Pa nong (Thailand); Meranti paang (Malaysia); White meranti (United Kingdom); Meranti putih (Indonesia); Pa-nong (Thailand); Kabak kau (Thailand); Sual (Thailand); Meranti jerit (Malaysia); Vit meranti (Sweden); Lumbor (Cambodia); Weisses meranti (Germany); Witte meranti (Netherlands); Meranti bianco (Italy); Meranri blanco (Spain); Meranri blanco (France); Manggasinoro (Philippines); Makai (India); Bobo (Vietnam)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a medium-sized to very large tree up to 60 m tall with bole branchless for 23 to 30 m and up to 165 cm in diameter. The buttresses are up to 3 m high.
Hábitat natural
Shorea bracteolata is found mostly on well-drained lowland coastal hills, up to 600 m of altitude. This tree is heavily exploited for white meranti timber, especially in Peninsular Malaysia.
Usos No-maderables
Occasional brittle heart is reported for this species.
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). Vestured pits. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits small Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Axial parenchyma storied. Axial parenchyma bands more than 3 cells wide. 4 to 10 rays per mm (medium). Silica bodies in the ray cells. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with simple to minutely bordered pits.
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Foto macroscópica de la madera, plano radial
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Foto microscópica sección transversal de la madera
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Green timber has a characteristic sappy smell, dry material has no taste or odor.
Color
The sapwood is white-yellowish. The heartwood is yellowish white when fresh, darkening to yellow-brown on drying.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
It is frequently interlocked.
Veta
This species is reported to have a medium to coarse texture.
Durabilidad Natural
It is moderately durable to non durable. The sapwood is rapidly affected by blue stain and it is also prone to insect attack.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
Contenido de sílice
Silica Content: Stock contains deposits of silica which have a severe blunting effect.
Dificultad para impregnar
The sapwood is moderately permeable to preservatives, but the heartwood is untreatable.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.59
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.65
Contracción Tangencial Total (Saturado hasta anhidro) (%)
4.7
Contracción Radial Total (Saturado hasta anhidro) (%)
3.2
Calendario de Secado
UK-F; JP-1; US-T6-D4
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)
917
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
197686
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
560
TRABAJABILIDAD
Aserrado
The response of this wood in sawing is easy to fair. Stellite tips are recommended.
Corte de chapa rotativa
This species is reported to have good characteristics for lamination.
Chapa tranchada
This species is reported to have good characteristics for lamination.
Pérdida de filo_romado
Silica deposits may cause severe blunting of the cutting elements.
Cepillado
Planing is reported to be easy.
Taladrado
Boring is reported to be easy.
Clavado
Risk of splitting, pre-boring recommended.
Encolado
It glues well but some difficulties are reported with alkaline glues.
Acabado
Resin causes problems.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, flooring, frames, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, PACKING, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, paper
VIVIENDA GENERAL
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Marcos
- 16 - Woods of the World
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
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
Pulpa_papel
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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