BOSSé CLAIR (Guarea cedrata)
Nome comercial
Bossé clair
Nome científico (autor)
Guarea cedrata Pellegr.
Família
MELIACEAE
Nomes comuns
Bosse (Côte d`Ivoire); Diambi (Zaire); Ebangbemva (Cameroon); White guarea; Tshidiamakeka; Tenumeadomei; Telemia; Scented mahogany; Penkwa; Pahiapo; Ossoung; Onwamdua; Obodo blanc; Obobo-nofwa; Nigerian pearwood; Nigerian cedar; Ngbose; Mbosse`; Lombe; Lofun; Kwadwuma; Guissu; Guarea; Edoucie`; Ebangbemva; Ebangbembra; Dzana; Duruiti; Ditoke; Diambi; Cedron; Cedar mahogany; Bossi; Bosse`; Bossassa; Bosassa; Bosae; Bonsannua; Belii; Anokue; African cedar; Edoucie (Cameroon); Obobo (Nigeria); Scented guarea (United Kingdom); Bosse (Germany); Bosasa (Zaire); Obobo nofua (Nigeria); Kwabohoro (Ghana)
Nome científico sinônimo (autor
Trichilia cedrata A. Chev.; Khaya cunahailata De Wild.; Khaya canaliculata De Wild.; Guarea alitipetiolata De Wild.
DESCRIÇÃO DA ÁRVORE
Descrição botânica
The tree may reach a height of 10 to 16 m. The bole is straight, with widely spaced plank-like buttresses. The trunk diameter attains 30 to 70 cm. Log is banned for international trading.(Cameroon)
Habitat natural
Guarea cedrata is a timber species found in some abundance in moist semi-deciduous forest and in the drier undisturbed areas of moist evergreen forest. It is reported in thickets on coastal plains, and on riverbanks. National conservation status in Cote
Distribuição natural
Species is widespread in tropical Africa.
Usos não madeiravéis
Sometimes presence of resin.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel Axial parenchyma oblique and/or sinuous. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays non-storied. Rays commonly 2 seriate. Silica bodies in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Occasionally septate fibers present. Fibers with simple to minutely bordered pits.
-
Foto de madeira macroscópica (radial)
-
Foto da secção transversal microscopica
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Odor ou Cheiro
Pleasant odor.
Cor
The sapwood is pale color, it has a thickness of 5 to 10 cm. The heartwood is pinkish brown, it is clearly demarcated. The silver figure is fine (barely visible).
Indice de cor
6
Grã
The grain is slightly but systematically interlocked.
Veios ou desenhos na superfície
The texture varies from fine to medium.
DURABILIDADE NATURAL
Durable to decay; this species can be utilized without preservative treatment for exterior joinery or similar uses. Moderately resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de durabilidade natural
1
Tensões internas do crescimento
No growth stresses are reported in this species.
Conteúdo de sílica
Silica Content: Silica presence is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.09
Tratamento preservativo
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.58
Densidade seca ao ar 12% (g/cm³)
0.63
Contração Tangencial Total (Saturado até peso seco) (%)
6.8
Contração Radial Total (Saturado até peso seco) (%)
4.1
Defeitos causados pela secagem
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of distortions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Programa de secagem recomendável
FR-6
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.6
Programa de secagem detalhado
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
966
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
128959
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
557
Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)
72
Cisalhamento radial a 12% (kgf/cm²)
85
Dureza Janka a 12% (perpendicular) (kgf)
496
Dureza Janka a 12% (paralela) (kgf)
598
TRABALHABILIDADE
Serrar ou Cortar
It is easy to saw.
Desdobro da tora em torno para lâminas
Suitable for slicing, also suitable for peeling if treated.
Desdobro da tora em faqueadeira para lâminas
Suitable for slicing, also suitable for peeling if treated.
Desgaste de ferramentas
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Aspectos do processamento em máquinas
Possible difficulties caused by interlocked grain are reported.
Aplainamento
Moderately easy; tools must be cautiously sharpened.
Aplicação para molduras
Moderately easy; tools must be cautiously sharpened.
Torneamento
30
Furação
Moderately easy; tools must be cautiously sharpened.
Fresagem_ranhura_canais
Moderately easy; tools must be cautiously sharpened.
Comportamento na aplicação de pregos
Pre-boring is necessary.
Colagem
Difficult to glue because of the extracts content.
Lixamento
Easy to perform; it gives good results.
Operação de lustre da superfície (brilho)
Can be polished without surface preparation.
Steam Bending
This species can be used for steam bending.
Trabalhabilidade com ferramentas manuais
No particular problems.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, NAVAL CONSTRUCTION, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, cigar boxes
CASAS
- 10 - Silica in Timbers
Vigas
- 11 - Prospect: The wood database
Vigotas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Tábuas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Pisos
- 14 - Handbook of Hardwoods
Parquets
- 15 - Empire Timbers
Marcos de portas
- 16 - Woods of the World
Degraus de escada
- 17 - Tree Conservation Database
Painéis
- 18 - W3TROPICOS Missouri Botanical Garden
Acessórios de madeira
- 19 - Silica in Timbers
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Móveis finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
CHAPAS
- 25 - Directory of Timber Trade Malaysia
Lâminas de superfície das chapas
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Lâminas decorativas
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneamento
- 30 - Embassy of Honduras in Japan
Artigos torneados
- 31 - Embassy of Colombia in Japan
Artigos torneados
- 32 - Embassy of Cote d`Ivoire in Japan
CONSTRUÇÃO NAVAL
- 55 - Tropical Timber Atlas of Latin America
Coberta para barcos
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Artesanato
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Charuteira
- 68 - Contribucion al conocimiento de la resistencia mecanica de la madera de peumo
Please Provide Information To View Producer Information