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MERBAU (Intsia bijuga)
Nome comercial
Merbau
Nome científico (autor)
Intsia bijuga (Colebr.) Kuntze
Família
LEGUMINOSAE
Nomes comuns
Ipil laut (Philippines); Ipil (Sarawak); Merbau (Indonesia); Mirabow (Sabah); Lum-paw (Thailand); Ipil (Philippines); Gonuo (Vietnam); Merbau (Netherlands); Kalabau (China); Kwila (Papua New Guinea); Komu (New Caledonia); Kwila (Australia); Merbau (United Kingdom); Hintsy (Madagascar)
Nome científico sinônimo (autor
Macrolobium bijugum Colebr.
DESCRIÇÃO DA ÁRVORE
Descrição botânica
It is a medium-sized to large tree up to 50 m tall. The bole is branchless for up to 20 m and up to 160 cm in diameter.
Habitat natural
It is a lowland rain forest tree which produces one of the most valuable timbers of South East Asia. It is common in lowland forests, in transitional zones behind mangroves.
Distribuição natural
It is distributed in the Indo-Malayan region, Indonesia, Philippines, and many of the western Pacific islands as well as in Australia.
Existência de plantações?
Plantations of "Merbau" are reported.
Usos não madeiravéis
Merbatu timber is reported to stain black in presence of iron.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Vessels per mm2 less than 6 (rare). Tangential diameter of vessel lumina 200 micras or more (large). Vestured pits. Vessel-ray pits similar to intervessel pits in size and shape. Simple perforation plates. Intervessel pits small, 7 micras or less. Axial parenchyma aliform. Axial parenchyma confluent. Axial parenchyma in narrow bands on lines up to 3 cells wide. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with distinctly bordered pits.
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Odor ou Cheiro
It has the characteristic odor when fleshly cut, resembling that raw of beans, and bitter taste.
Cor
The sapwood is clearly differentiated, lighter pale yellow. The heartwood varies from brownish gray through bronze to dark brown, darkening with age.
Indice de cor
5
Grã
It is not always straight, occasionally interlocked.
Veios ou desenhos na superfície
It is coarse and homogeneous.
Brilho
The sapwood has somewhat greenish luster.
DURABILIDADE NATURAL
It is very durable, but the sapwood is vulnerable to the fungi and insect attack.
Indice de durabilidade natural
2
Conteúdo de sílica
Silica Content: It is reported to contain 0.2% silica. Silica Value: 0.2
Tratamento preservativo
The heartwood is very difficult to treat.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.73
Densidade seca ao ar 12% (g/cm³)
0.83
Contração Tangencial Total (Saturado até peso seco) (%)
4.9
Contração Radial Total (Saturado até peso seco) (%)
2.7
Defeitos causados pela secagem
Ease of Drying: Air seasoning is reported to be good.
Programa de secagem recomendável
UK-C; US-T3-C2
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.8
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
1493
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
167655
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
785
Cisalhamento radial a 12% (kgf/cm²)
183
Dureza Janka a 12% (perpendicular) (kgf)
797
Dureza Janka a 12% (paralela) (kgf)
774
TRABALHABILIDADE
Serrar ou Cortar
The response of this wood in sawing is fair to difficult. During sawmilling, the teeth might become covered with gums.
Desdobro da tora em torno para lâminas
It is difficult to cut or slice into veneer, even after pre-streaming, mainly due to its high density.
Desdobro da tora em faqueadeira para lâminas
It is difficult to cut or slice into veneer, even after pre-streaming, mainly due to its high density.
Desgaste de ferramentas
Wood of this species exerts a moderate blunting effect on the cutting tools.
Aspectos do processamento em máquinas
Machining of this species is fair to difficult.
Aplainamento
A reduction of the cutting angle to 20 degrees is advantageous in planing quarter-sawn material with interlocked grain to prevent picking-up of grain.
Torneamento
30
Furação
Boring is reported to be easy.
Comportamento na aplicação de pregos
This species is reported to have a poor nailing behavior.
Colagem
Gluing behavior is reportedly good.
Acabamento
Finishing is rated as good to fair. It has to be protected from humidity until the finishing operations are completed.
Aplicação de verniz
Wood of this species is easy to stain.
Revestimentos
Painting or varnishing of this wood is easy.
Operação de lustre da superfície (brilho)
The wood stains and polishes satisfactorily, but requires considerable filling.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
EXTERIOR GENERAL, poles, rails, crossties, piers, HOUSING GENERAL, flooring, frames, steps, panelling, FURNITURE AND CABINETS, TURNING, cutlery, SPORTS, TOOLS, tool handles, agricultural tools, CONTAINERS, chemical storage, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches
EXTERIOR
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Postes de energia
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Varão de cerca
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Dormentes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
Pilar
- 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
CASAS
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Marcos de portas
- 16 - Woods of the World
Degraus de escada
- 17 - Tree Conservation Database
Painéis
- 18 - W3TROPICOS Missouri Botanical Garden
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Torneamento
- 30 - Embassy of Honduras in Japan
Cabo de faca
- 33 - Embassy of Gabon in Japan
INSTRUMENTOS ESPORTIVOS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
FERRAMENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Cabos de instrumentos agrícolas
- 44 - Atlas of Peruvian Woods
CAIXA GRANDE OU CONTAINER
- 50 - Properties of imported tropical woods
Chemical Storage
- 52 - Propiedades mecanicas y asociadas del pino insigne (Pinus radiata d.don)
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
Pilar de sustentação para portos
- 61 - Manual de Diseño para Maderas del Grupo Andino
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
ARTIGOS MUSICAIS E OUTROS
- 63 - Madeiras do Brazil II
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
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