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MUIRAPIRANGA (Brosimum rubescens)
Nombre comercial
Muirapiranga
Nombre científico (con autor)
Brosimum rubescens Taub.
Familia
MORACEAE
Nombres Comunes
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
Nombres científicos sinónimos (con autores)
Piratinera rubescens (Taub.) Pittier; Alicastrum rubescens (Taub.) Taub.
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
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.
Distribución 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.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
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.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Odor or taste are typically indistinct.
Color
The sapwood is not clearly demarcated from the heartwood. The heartwood is usually deep red or pale reddish-brown in color.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
3
Grano
The grain is straight to slightly interlocked.
Veta
The wood is medium to fine textured.
Brillo
It is not a lustrous wood.
Durabilidad Natural
It is resistant to attack by decay-causing organisms, termites, and dry wood insects.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Dificultad para impregnar
The heartwood is considered to be moderately difficult to preserve. The sapwood is easier to preserve.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.95
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
1.11
Contracción Tangencial Total (Saturado hasta anhidro) (%)
6.8
Contracción Radial Total (Saturado hasta anhidro) (%)
4.7
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.4
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1497
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
193214
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
939
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
125
Cizallamiento radial CH12% (kgf/cm²)
137
Dureza Janka (lados) CH12% (kgf)
918
Dureza Janka (extremos) CH12% (kgf)
1070
TRABAJABILIDAD
Aserrado
The wood is reported to be moderately difficult to saw.
Corte de chapa rotativa
It is reported to be interesting for slicing, but thermal treatments are recommended.
Chapa tranchada
It is reported to be interesting for slicing, but thermal treatments are recommended.
Pérdida de filo_romado
Blunting effect on cutting tools is rated as moderate.
Cepillado
Planing operations are reported to be rather difficult.
Torneado
30
Clavado
Pre-boring is required before nailing or screwing.
Encolado
Gluing properties are reported to be good.
Acabado
It is easy to finish.
Sacar lustre
The wood has good polishing characteristics.
Facilidad para herramientas manuales
B. rubescens is moderately difficult to work with hand tools.
Usos Reportados
USOS FINALES (RESUMEN)
FURNITURE AND CABINETS, TURNING, OTHER AND MUSICAL INSTRUMENTS
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Torneado
- 30 - Embassy of Honduras in Japan
OTROS E INSTRUMENTOS MUSICALES
- 63 - Madeiras do Brazil II
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