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EBANA (Sindora klaineana)
Trade Name
Ebana
Scientific Name
Sindora klaineana Pierre
Family
LEGUMINOSAE
Common Names
Olengue (Gabon); Ngom (Gabon)
Description Of The Tree
Botanical Description
The tree reaches a height of 50 m, with trunk diameters up to 200 cm. The bole is cylindrical, straight and clear to 32 m in length, slightly buttressed.
Natural Habitat
Sindora klaineana occurs in dense, equatorial forests or near moist mangrove forests, and at the edge of some savanna-like localities.
Non Timber Uses
Contains some resins or extracts which could pose problems when machining or finishing.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Non-septate fibers. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is the outer sapwood is pale yellow to red and the inner sapwood is pale red. The heartwood is darker than the sapwood, with walnut-like look with black and pale yellow stripes. The timber darkens on exposure, it is clearly demarcated.
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The wood is mostly medium in texture.
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Resistance To Impregnation
Nearly impossible to treat with a too much low penetration of the preservative substances.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.56
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.61
Drying Defects
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks and distortions.
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
753
Compression parallel to fiber 12%MC (kgf/cm²)
496
Compression perpendicular to fiber 12%MC (kgf/cm²)
61
Janka hardness (side) 12%MC (kgf)
459
Janka hardness (end grain) 12%MC (kgf)
563
Workability
Sawing
It is easy to saw.
Rotary Veneer Cutting
Suitable for slicing, also suitable for peeling if treated.
Sliced Veneer
Suitable for slicing, also suitable for peeling if treated.
Blunting Effect
Slight blunting effect; ordinary tools can be used for sawing and machining.
Machining
Machining of this species is reportedly easy.
Planing
Moderately easy; tools must be cautiously sharpened.
Moulding
Rather difficult; special tools are needed.
Boring
Rather difficult; special tools are needed.
Mortising
Rather difficult; special tools are needed.
Nailing
No particular problem.
Gluing
Glues well if basic gluing technical rules are followed.
Sanding
Easy to perform; it gives good results.
Polishing
Can be polished without surface preparation.
Response To Hand Tools
No particular problems.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, fittings, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, cores, PACKING, OTHER AND MUSICAL INSTRUMENTS, particleboard
General Housing
- 10 - Silica in Timbers
Fittings
- 19 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Cores
- 27 - Embassy of Brazil in Japan
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Particleboard
- 80 - Estudio Integral de la Madera para Construcción
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