NIOVé (Staudtia kamerunensis)
Nome comercial
Niové
Nome científico (autor)
Staudtia kamerunensis Warb.
Família
MYRISTICACEAE
Nomes comuns
M'boun (Gabon); M'bonda (Cameroon); Menga-menga (Angola); Kamashi (Zaire); Susumenga (Zaire); Menga-menga (Congo); M`boun (Gabon); Niove (Gabon); Bokapi (Equatorial Guinea)
Nome científico sinônimo (autor
Staudtia stipitata Warb.; Staudtia gabonensis Warb.; Staudtia congensis Vermoesen
DESCRIÇÃO DA ÁRVORE
Descrição botânica
The tree reaches a height of 23 to 32 m. The bole is cylindrical, straight and clear to 20 m in length, sometimes with a swollen base. The trunk diameter attains 100 cm.
Habitat natural
Staudtia kamerunensis occurs in mixed forests, in large stands, as well as in secondary forests.
Distribuição natural
West Africa in Gabon, Cameroon, Republic of the Congo and in the Democratic Republic of the Congo.
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). Tyloses thin walled. Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Scalariform perforatio Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with simple to minutely 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
Light and pleasant odor.
Cor
The sapwood is pale yellow to orange yellow, it has a thickness of 8 cm. The heartwood is yellow brown to reddish brown, with darker streaks, it is clearly demarcated. The silver figure is medium.
Indice de cor
4
Grã
Straight; grain has no particular influence on drying, machining and finishing qualities.
Veios ou desenhos na superfície
This species is usually reported to have a fine texture.
Brilho
This wood is commonly of moderate luster.
DURABILIDADE NATURAL
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de durabilidade natural
1
Tensões internas do crescimento
No residual stresses are reported in this species.
Conteúdo de sílica
Silica Content: Negligible contents of silica are found in timber of this species. Amounts over 0.05% may affect the wood processing. Silica Value: 0.01
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)
0.78
Densidade seca ao ar 12% (g/cm³)
0.89
Contração Tangencial Total (Saturado até peso seco) (%)
6.2
Contração Radial Total (Saturado até peso seco) (%)
5.1
Defeitos causados pela secagem
Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of distortions. Kiln Schedules: The kiln schedule has been tested.
Programa de secagem recomendável
FR-11
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.2
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)
1557
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
188065
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
923
Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)
141
Cisalhamento radial a 12% (kgf/cm²)
88
Dureza Janka a 12% (perpendicular) (kgf)
987
Dureza Janka a 12% (paralela) (kgf)
1035
TRABALHABILIDADE
Serrar ou Cortar
Sawing of this species requires powerful equipment.
Desdobro da tora em torno para lâminas
Suitable for slicing.
Desdobro da tora em faqueadeira para lâminas
Suitable for slicing.
Desgaste de ferramentas
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Aspectos do processamento em máquinas
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Aplainamento
Moderately easy; tools must be cautiously sharpened.
Aplicação para molduras
Rather difficult; special tools are needed.
Torneamento
30
Furação
Rather difficult; special tools are needed.
Fresagem_ranhura_canais
Rather difficult; special tools are needed.
Comportamento na aplicação de pregos
Pre-boring is necessary.
Colagem
Difficult to glue because of high density.
Lixamento
Easy to perform; it gives good results.
Operação de lustre da superfície (brilho)
Can be polished without surface preparation.
Trabalhabilidade com ferramentas manuais
Working with hand tools is difficult.
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, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, boat hulls, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts
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 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
Cabo de faca
- 33 - Embassy of Gabon in Japan
Formas de sapateiro
- 34 - Embassy of Indonesia in Japan
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
Barcos
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Casco para barcos
- 57 - Estadísticas de Aprovechamiento, Exportación y comercialización Nacional de Productos Forestales
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.)
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