BANGKAL (Nauclea orientalis)
Nome comercial
Bangkal
Nome científico (autor)
Nauclea orientalis (L.) L.
Família
RUBIACEAE
Nomes comuns
Gempol (Indonesia); Bengkal (Indonesia); Bangkal; Tum kham (Thailand); Klepu pasir (Indonesia); Bulala (Philippines); Yellow cheesewood (Papua New Guinea); Prung (Myanmar); Kayu mas (Indonesia); Mau-kadon (Myanmar); Kan lueang (Thailand); Krathum khlong (Thailand); Mambog (Philippines)
Nome científico sinônimo (autor
Sarcocephalus undulatus Miq; Sarcocephalus cordatus Miq.; Nauclea coadunata Roxb. Ex. J.E. Smith; Cephalanthus orientalis L.
DESCRIÇÃO DA ÁRVORE
Descrição botânica
It is a large tree reaching heights of about 20 m and 80 cm in diameter. The buttresses are absent. The bole is up to 9 m long, cylindrical and straight.
Habitat natural
Nauclea occurs in lowland an hill forests, sometimes up to 1,100 m of altitude, often along stream and swampy locations.
Usos não madeiravéis
A yellow dye can be obtained from the root bark.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Occasionally vessels with colored deposits. Vestured pits. Vessels per mm2 5 to 20. Occasionally vessels per mm2 less than 6. Simple perforation plates. Vessel-ray pits similar to interve Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. 5 to 8 cells per parenchyma strand. Occasionally rays more than 10 per mm (abundant). Ray height more than 1 mm. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cel Fibers with distinctly bordered pits.
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Foto de madeira macroscópica (tangencial)
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Foto da secção transversal microscopica
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Odor ou Cheiro
It has no taste or smell.
Cor
The sapwood is often undefined, pale yellow or white. The heartwood varies from whitish-orange buff to saffron.
Indice de cor
5
Grã
The grain is slightly interlocked.
Veios ou desenhos na superfície
Fine texture is reported in this species.
Brilho
The wood surface is dull.
DURABILIDADE NATURAL
The wood is fairly resistant to insect attacks, but susceptible to dry wood termites. The heartwood is moderately resistant to blue stain.
Indice de durabilidade natural
6
Conteúdo de sílica
Silica Content: It is non-siliceous. Silica Value: 0
Tratamento preservativo
The sapwood is permeable to impregnation, the heartwood is usually permeable but may be moderately resistant in some instances.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.49
Densidade seca ao ar 12% (g/cm³)
0.54
Contração Tangencial Total (Saturado até peso seco) (%)
5.8
Contração Radial Total (Saturado até peso seco) (%)
3.5
Defeitos causados pela secagem
Ease of Drying: Seasoning is generally easy and rapid with little degrade. Drying Defects: Risk of moderate warping. Kiln Schedules: Kiln drying is fairly rapid under moderate schedules.
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.6
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
TRABALHABILIDADE
Serrar ou Cortar
N. orientalis saws easily.
Aspectos do processamento em máquinas
Wood processing is reported to be easy.
Aplicação para molduras
Molding operations are reported to be easy.
Torneamento
30
Acabamento
This species is reported to give a good finish.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, flooring, shutter boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, TOOLS, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches, moldings
CASAS
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Persianas
- 20 - Prospect: The wood database
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Gabinetes
- 24 - Empire Timbers
CHAPAS
- 25 - Directory of Timber Trade Malaysia
Torneamento
- 30 - Embassy of Honduras in Japan
FERRAMENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
PALETES PARA EMBALAGENS
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Artesanato
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Pau de fósforo
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Molduras de quadros
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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