MOABI (Baillonella toxisperma)
Nome comercial
Moabi
Nome científico (autor)
Baillonella toxisperma Pierre
Família
SAPOTACEAE
Nomes comuns
M'foi (Gabon); Adjap (Equatorial Guinea); Moabi (Congo); Adjap (Cameroon); Moabi (Angola); Ulumba; Orere; Nyabi; Ngulube; Nduku wa dijondo; Mwabi; Muyabi; Mudia; Muabi; Kungulu; Djave; Cungulo; Adjap; African pearwood (United Kingdom); Muamba jaune (Zaire); M`foi (Gabon); Dimpampi (Congo); Ayap (Equatorial Guinea); Ayap (Cameroon); Adza (Gabon); Njabi (Cameroon); Njabi (Nigeria); Moabi
Nome científico sinônimo (autor
Mimusops obovata Pierre ex Engl.; Mimusops djave (Laness.) Engl.; Bassia djave Laness.; Baillonella djave Pierre
DESCRIÇÃO DA ÁRVORE
Descrição botânica
The tree reaches a height of more than 50 m with straight cylindrical boles to 32 m in length. The trunk diameter attains up to 200 cm, sometimes even reaching more than 300 cm. Butt swelling is reported in older trees. Log is banned for international tra
Habitat natural
Baillonella toxisperma is found in primary evergreen and old secondary rainforest, often in small patches on dry or moist soils.
Distribuição natural
Found in the dense equatorial forests of Africa.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Vessels in dendritic pattern. Vessels in diagonal and/or radial pattern. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Tyloses common. Non-vestured pits. Vessels per mm2 Axial parenchyma in continuous tangential lines or fine bands. Non-crystals in axial parenchyma cells. 5 to 8 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. Axial parenchyma bands more than 3 cells wide. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Silica bodies in upright and/or square ray cells. 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
Cor
The sapwood is dark grey to pinkish grey, it has a thickness of 4 to 6 cm. The heartwood is pink brown to red brown, it is clearly demarcated. The silver figure is fine (hardly visible).
Indice de cor
3
Grã
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Veios ou desenhos na superfície
This wood has a somewhat fine texture.
Brilho
It is reported to be low in 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
Residual growth stresses are absent.
Conteúdo de sílica
Silica Content: Silica is present. Amounts over 0.05% may affect wood processing. Silica Value: 0.19
Tratamento preservativo
Difficult to treat with only a low penetration of the preservative products.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.77
Densidade seca ao ar 12% (g/cm³)
0.87
Contração Tangencial Total (Saturado até peso seco) (%)
8.7
Contração Radial Total (Saturado até peso seco) (%)
6.5
Defeitos causados pela secagem
Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed. 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-4
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.3
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)
1453
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
214516
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
750
Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)
107
Cisalhamento radial a 12% (kgf/cm²)
124
Dureza Janka a 12% (perpendicular) (kgf)
949
Dureza Janka a 12% (paralela) (kgf)
1003
TRABALHABILIDADE
Serrar ou Cortar
Sawing of this species requires powerful equipment.
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
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
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
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 high density.
Lixamento
Easy to perform; it gives good results.
Operação de lustre da superfície (brilho)
Can be polished without surface preparation.
Steam Bending
It is well suited for wood bending uses.
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, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, BENDING, chairs, 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 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
Cabo de faca
- 33 - Embassy of Gabon in Japan
Formas de sapateiro
- 34 - Embassy of Indonesia in Japan
Resistência a flexão
- 35 - Embassy of Myanmar in Japan
Cadeiras
- 36 - Autoridad Nacional del Ambiente, Panama
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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