KAPUR (Dryobalanops beccarii)
Nome comercial
Kapur
Nome científico (autor)
Dryobalanops beccarii Dyer
Família
Dipterocarpaceae
Nomes comuns
Indonesian kapur (United States of America); Capur d`Indonesia (France); Capur indonesiano (Spain); Capur indonesiano (Italy); Indonesisk kapur (Sweden); Oost-Borne kamfer (Netherlands); Kapoer (Netherlands); Indonesisch kapur (Germany); Indonesian kapur (United Kingdom); Kapur (Sabah); Kapur (Sarawak); Kapur sintuk (Indonesia); Kapur (Malaysia)
Nome científico sinônimo (autor
Dryobalanops oocarpa v. Slooten
DESCRIÇÃO DA ÁRVORE
Descrição botânica
This camphor tree is large to very large, up to 65 cm tall, with a straight bole up to 100 cm in diameter.
Habitat natural
Distributed within Borneo, this locally abundant tree occurs on leached sandy soils, sometimes in periodically inundated areas or along streams, below 700 m of altitude.
Usos não madeiravéis
Brittle heart is occasionally reported for this species. It contains chemicals that discolor ferrous metals when damp.
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). Tyloses common. Vestured pits. Vessel-ray pits reticulate and/or foraminate. Vascular/vasicentric tracheides present. Simple perforatio Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Rays storied. Silica bodies in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). 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
The odor resembles camphor.
Cor
The sapwood varies from light yellowish brown to pale pink. The heartwood is rose red to dark reddish brown.
Indice de cor
5
Grã
It is mostly straight, rarely deep interlocking, occasional brittle heart in the innermost heart.
Veios ou desenhos na superfície
The texture varies from moderately coarse to coarse.
Brilho
The planed surfaces are not particularly lustrous.
DURABILIDADE NATURAL
It is resistant to fungi, when fresh it is vulnerable to insects.
Indice de durabilidade natural
3
Tratamento preservativo
The heartwood is resistant to impregnation with preservatives, even under pressure, but the sapwood is permeable.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.54
Densidade seca ao ar 12% (g/cm³)
0.59
Contração Tangencial Total (Saturado até peso seco) (%)
6.5
Contração Radial Total (Saturado até peso seco) (%)
3.0
Defeitos causados pela secagem
Drying Defects: There is a moderate risk of splitting, insect attack and staining, and a slight risk of cupping, bowing and end-checking.
Programa de secagem recomendável
UK-E; JP-6
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
2.2
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
635
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
135198
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
532
Cisalhamento radial a 12% (kgf/cm²)
38
TRABALHABILIDADE
Serrar ou Cortar
When green, the timber is easy to saw. Dry timber is less easy to saw because of the presence of silica. Cross cutting is generally easy.
Desdobro da tora em torno para lâminas
It is good for peeling if well steamed, but resin problems.
Desdobro da tora em faqueadeira para lâminas
It is good for peeling if well steamed, but resin problems.
Desgaste de ferramentas
Saw-teeth may become clogged by resin.
Aspectos do processamento em máquinas
The response of this species to machining operations is good to fair.
Aplainamento
Planing is reported to be easy.
Furação
Boring is reported to be easy.
Comportamento na aplicação de pregos
Needs pre-bore for nailing. Screws well.
Colagem
Resin exudation causes gluing problems, urea glues recommended.
Acabamento
Wood of this species is difficult to finish. It needs filling.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, flooring, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TOOLS, tool handles, CONTAINERS, truck bodies
CASAS
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
CHAPAS
- 25 - Directory of Timber Trade Malaysia
FERRAMENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Carroceria de caminhão
- 53 - Timbers of the New World
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