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SILKY OAK, LACEWOOD (Grevillea robusta)
Nombre comercial
Silky oak, Lacewood
Nombre científico (con autor)
Grevillea robusta A. Cunn. ex R. Br.
Familia
PROTEACEAE
Nombres Comunes
Traxibafn (Vietnam); Ngaan hoa (Vietnam); Son india (Thailand); Khadaw hmi (Myanmar); Salamandar (Indonesia); Silky oak; Grevillea; Lacewood (United States of America)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a small to medium-sized tree up to 25 m tall. The bole is straight, branchless for up to 15 m, up to 80 cm in diameter, usually without buttresses.
Hábitat natural
Grevillea robusta generally occurs in dry savanna forests up to 1,800 m of altitude.
Distribución natural
It is native to eastern Australia.
Existencia de plantaciones?
This species is widely planted in tropical and subtropical regions throughout the world. Extensively planted as a shade tree for coffee and tea plantations and as an ornamental.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Tyloses common. Vessels per mm2 5 to 20. Intervessel pits scalariform. Vessel-ray pits reticulate and/or foraminate. Multiple perforation plates. Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Over 9 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Oil and/or mucilage cells associated with the axial and/or ray parenchyma (idioblasts). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is cream. The heartwood is pink or light red when freshly cut, turning yellow-brown to red-brown on drying.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
The grain is straight or wavy.
Veta
Texture is usually medium to coarse.
Brillo
The wood surface is lustrous.
Durabilidad Natural
Timber of this species is liable to marine borers, pinhole borers and termite attack.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
Dificultad para impregnar
The sapwood is permeable, but the heartwood is moderately resistant to impregnation.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.56
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.61
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.6
Contracción Radial Total (Saturado hasta anhidro) (%)
3.2
Defectos por secado
Ease of Drying: Seasoning is reported to be good. Drying Defects: Risk of little checking and warping.
Calendario de Secado
UK-C; US-T3-C2
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
3.0
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
790
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
107000
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
460
Cizallamiento radial CH12% (kgf/cm²)
117
Dureza Janka (lados) CH12% (kgf)
378
TRABAJABILIDAD
Aserrado
The response of this wood in sawing is easy to fair. Green wood saws easily but it may gum up the saw-blades.
Corte de chapa rotativa
This timber is reported to be suitable for lamination.
Chapa tranchada
This timber is reported to be suitable for lamination.
Maquinado general
It is easy to machine.
Cepillado
A cutting angle of 10 degrees is required to obtain a good finish on quarter-sawn faces.
Torneado
30
Facilidad para herramientas manuales
The wood responds well to hand tools.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, boards, flooring, parquet, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, BENDING, TOOLS, agricultural tools, PACKING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts
VIVIENDA GENERAL
- 10 - Silica in Timbers
Tablas
- 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
Parquet
- 15 - Empire Timbers
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
chapa decorativa
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneado
- 30 - Embassy of Honduras in Japan
Curvado
- 35 - Embassy of Myanmar in Japan
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
PALLETS_EMBALAJES
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Carrocería de camión
- 53 - Timbers of the New World
Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
artesanía
- 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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