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WHITE MERANTI (Shorea bracteolata)
Nome comercial
White meranti
Nome científico (autor)
Shorea bracteolata Dyer
Família
Dipterocarpaceae
Nomes comuns
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)
DESCRIÇÃO DA ÁRVORE
Descrição botânica
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.
Habitat 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 não madeiravéis
Occasional brittle heart is reported for this species.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
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.
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Odor ou Cheiro
Green timber has a characteristic sappy smell, dry material has no taste or odor.
Cor
The sapwood is white-yellowish. The heartwood is yellowish white when fresh, darkening to yellow-brown on drying.
Indice de cor
5
Grã
It is frequently interlocked.
Veios ou desenhos na superfície
This species is reported to have a medium to coarse texture.
DURABILIDADE 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 durabilidade natural
6
Conteúdo de sílica
Silica Content: Stock contains deposits of silica which have a severe blunting effect.
Tratamento preservativo
The sapwood is moderately permeable to preservatives, but the heartwood is untreatable.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.59
Densidade seca ao ar 12% (g/cm³)
0.65
Contração Tangencial Total (Saturado até peso seco) (%)
4.7
Contração Radial Total (Saturado até peso seco) (%)
3.2
Programa de secagem recomendável
UK-F; JP-1; US-T6-D4
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.5
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
917
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
197686
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
560
TRABALHABILIDADE
Serrar ou Cortar
The response of this wood in sawing is easy to fair. Stellite tips are recommended.
Desdobro da tora em torno para lâminas
This species is reported to have good characteristics for lamination.
Desdobro da tora em faqueadeira para lâminas
This species is reported to have good characteristics for lamination.
Desgaste de ferramentas
Silica deposits may cause severe blunting of the cutting elements.
Aplainamento
Planing is reported to be easy.
Furação
Boring is reported to be easy.
Comportamento na aplicação de pregos
Risk of splitting, pre-boring recommended.
Colagem
It glues well but some difficulties are reported with alkaline glues.
Acabamento
Resin causes problems.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
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
CASAS
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Marcos de portas
- 16 - Woods of the World
Painéis
- 18 - W3TROPICOS Missouri Botanical Garden
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
CHAPAS
- 25 - Directory of Timber Trade Malaysia
PALETES PARA EMBALAGENS
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
CAIXA GRANDE OU CONTAINER
- 50 - Properties of imported tropical woods
Tanoaria
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Carroceria de caminhão
- 53 - Timbers of the New World
Pisos para assoalho de trem
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUÇÃO NAVAL
- 55 - Tropical Timber Atlas of Latin America
Celulose Papel
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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