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TAUARI (Couratari oblongifolia)
Trade Name
Tauari
Scientific Name
Couratari oblongifolia Ducke & R. Knuth
Family
LECYTHIDACEAE
Common Names
Mahot; Estopeiro (Brazil); Tauari Morrão (Brazil); Imbirema (Brazil); Tauri-Amarelo (Brazil); Tauari (Brazil); Guatambu-Vermelho (Brazil)
Description Of The Tree
Botanical Description
The commercial lengths are reported to vary from 9 to 16 m, with diameters from 45 to 75 cm. The logs are reported to be straight and cylindrical.
Natural Distribution
This genus is reported to be widely distributed all over tropical South America.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Occasionally tangential diameter of vessel lumina 200 micras or more. Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wid 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Silica bodies in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has no discernible odor or taste.
Color
The heartwood and sapwood are indistinct. The wood is yellowish white to light yellowish brown.
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
The grain is usually straight.
Texture
This species is usually reported to have a medium texture.
Luster
Luster is reported to be low.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Resistance To Impregnation
The wood of this species is very easy to preserve with oil or water soluble products.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.50
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.54
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.6
Total shrinkage Radial (Saturated to 0%MC) (%)
4.2
Recommended Dry Kiln Schedule
BR-A
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.6
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
876
Stiffness (MOE) 12%MC (kgf/cm²)
109500
Compression parallel to fiber 12%MC (kgf/cm²)
466
Compression perpendicular to fiber 12%MC (kgf/cm²)
63
Shear strength radial 12%MC (kgf/cm²)
97
Janka hardness (side) 12%MC (kgf)
425
Janka hardness (end grain) 12%MC (kgf)
566
Workability
Sawing
Wood of this species is easy to cut.
Rotary Veneer Cutting
It is interesting for peeling and for slicing, thermal treatments are recommended.
Sliced Veneer
It is interesting for peeling and for slicing, thermal treatments are recommended.
Blunting Effect
This species has a moderate to severe blunting effect because of its silica content.
Planing
It is easy to process, with good results. Risk of torn grain is reported.
Moulding
Molding of this species is reported to be easy.
Turning
30
Boring
Boring operations are easy, with very good finishing.
Sanding
Sanding operations it gives good results, but fuzzy surfaces are reported.
Staining
Staining of this wood is easy.
Coatings
Painting or varnishing of this species is reportedly easy.
Polishing
It has a good polishing.
Response To Hand Tools
C. oblongifolia is reported to be easy to cut with hand tools.
Substitute Species
This species is reported to be similar to Teak (Tectona grandis) and Koto (Pterygota spp.).
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, HOUSING GENERAL, flooring, panelling, shutter boards, FURNITURE AND CABINETS, PLYWOOD AND VENEER, Decorative veneer, TURNING, cutlery, BENDING, SPORTS, table tennis, TOOLS, tool handles, PACKING, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Shutter Boards
- 20 - Prospect: The wood database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Decorative veneer
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Turning
- 30 - Embassy of Honduras in Japan
Knife Handles
- 33 - Embassy of Gabon in Japan
Bending
- 35 - Embassy of Myanmar in Japan
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
- 41 - Embassy of the Philippines
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Other & Musical Instruments
- 63 - Madeiras do Brazil II
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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