MUIRAPIRANGA (Brosimum rubescens)
Nome comercial
Muirapiranga
Nome científico (autor)
Brosimum rubescens Taub.
Família
MORACEAE
Nomes comuns
Bloodwood; Palo De Oro; Legno Satino; Ferolia; Satinholz; Doekaliballi; Satijnhout; Siton Paya; Satine Rubane; Satine Rouge; Muirapiranga (Brazil); Satinwood; Conduru; Falso Pau Brasil (Brazil); Pau Rainha (Brazil); Amapá Rana (Brazil); Satine; Satiné
Nome científico sinônimo (autor
Piratinera rubescens (Taub.) Pittier; Alicastrum rubescens (Taub.) Taub.
DESCRIÇÃO DA ÁRVORE
Descrição botânica
This tree is reported to have commercial lengths up to 17 m, with diameters from 45 to 60 cm. The boles are straight and cylindrical. It has abundant creamy latex.
Distribuição natural
The species is reported to be regionally common within its range, which includes the Guyanas and the lower Amazon basin. In Brazil it occurs in the Para, Amazonas, Mato Grosso and Rondonia states.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in s Axial parenchyma aliform. Axial parenchyma confluent. Occasionally prismatic crystals in non-chambered axial parenchyma cells. Axial parenchyma bands under 4 per mm. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Occasionally prismatic crystals in the ray cells. Occasionally heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kr 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
Odor or taste are typically indistinct.
Cor
The sapwood is not clearly demarcated from the heartwood. The heartwood is usually deep red or pale reddish-brown in color.
Indice de cor
3
Grã
The grain is straight to slightly interlocked.
Veios ou desenhos na superfície
The wood is medium to fine textured.
Brilho
It is not a lustrous wood.
DURABILIDADE NATURAL
It is resistant to attack by decay-causing organisms, termites, and dry wood insects.
Indice de durabilidade natural
1
Tratamento preservativo
The heartwood is considered to be moderately difficult to preserve. The sapwood is easier to preserve.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
0.95
Densidade seca ao ar 12% (g/cm³)
1.11
Contração Tangencial Total (Saturado até peso seco) (%)
6.8
Contração Radial Total (Saturado até peso seco) (%)
4.7
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.4
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
1497
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
193214
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
939
Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)
125
Cisalhamento radial a 12% (kgf/cm²)
137
Dureza Janka a 12% (perpendicular) (kgf)
918
Dureza Janka a 12% (paralela) (kgf)
1070
TRABALHABILIDADE
Serrar ou Cortar
The wood is reported to be moderately difficult to saw.
Desdobro da tora em torno para lâminas
It is reported to be interesting for slicing, but thermal treatments are recommended.
Desdobro da tora em faqueadeira para lâminas
It is reported to be interesting for slicing, but thermal treatments are recommended.
Desgaste de ferramentas
Blunting effect on cutting tools is rated as moderate.
Aplainamento
Planing operations are reported to be rather difficult.
Torneamento
30
Comportamento na aplicação de pregos
Pre-boring is required before nailing or screwing.
Colagem
Gluing properties are reported to be good.
Acabamento
It is easy to finish.
Operação de lustre da superfície (brilho)
The wood has good polishing characteristics.
Trabalhabilidade com ferramentas manuais
B. rubescens is moderately difficult to work with hand tools.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
FURNITURE AND CABINETS, TURNING, OTHER AND MUSICAL INSTRUMENTS
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Torneamento
- 30 - Embassy of Honduras in Japan
ARTIGOS MUSICAIS E OUTROS
- 63 - Madeiras do Brazil II
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