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Tiama
Entandrophragma congoense A.Chev.
MELIACEAE
Gedur-nohor (Nigeria); Tiama (Côte d`Ivoire); Gedur-nohor (United Kingdom); M'vovo (Zaire); Gedu-nohor (United Kingdom); Acuminata (Germany); Tiama-mahagoni (Germany); Mukusu (Uganda); Vovo (Zaire); Lifaki (Zaire); Acuminata (Angola); Livuite (Angola); Kiluka (Congo); Abeubegne (Gabon); Dongomanguila (Equatorial Guinea); Gedu-nohor (Nigeria); Edinam (Ghana); Tiama
Leioptyx congoensis Pierre ex De Wild.
The bole is straight and cylindrical, may be up to 32 m, sometimes with trunk diameters of more than 200 cm.
Entandrophragma congoense is widely distributed throughout different forests, except in mountain slopes.
West, South-West, and Central Africa, from Guinea to Angola and to Uganda.
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Brown-colored deposits in heartwood vessels. Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation pl Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma confluent unilateral paratracheal. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Larger rays more than 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with simple to minutely bordered pits.
Unrestricted
The sapwood is whitish or pinkish, it has a thickness of 10 cm. The heartwood is red-brown, darkening slightly on exposure, it is clearly demarcated. The silver figure is fine.
4
Straight or slightly interlocked, sometimes with an influence on further processing operations.
This wood has a somewhat medium texture.
The wood surface is described as low in luster.
Slightly durable to decay. This species needs preservative treatment for uses with risks of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Sensible to termites attack. The heartwood is resistant
6
Residual growth stresses are absent.
Nearly impossible to treat with a too much low penetration of the preservative substances.
0.47
0.51
7.0
5.1
Ease of Drying: It is easy to air season with little or no degrade. Drying Defects: Precaution must be taken to prevent blue stain. Kiln Schedules: Schedule proposed for klinki pine. The recommended temperatures for kiln drying 25 mm thick boards from green to 15% moisture content are dry bulb 80 to 90 degrees and wet bulb 55 to 65 degrees.
FR-9
1.4
710
116555
445
53
38
318
421
It is easy to saw.
Suitable for slicing, also suitable for peeling if treated.
Suitable for slicing, also suitable for peeling if treated.
Slight blunting effect; ordinary tools can be used for sawing and machining.
Possible difficulties caused by interlocked grain are reported.
Easy; no particular problems.
Easy; no particular problems.
30
Easy; no particular problems.
Easy; no particular problems.
No particular problem.
Glues well if basic gluing technical rules are followed.
Easy to perform; it gives good results.
Can be polished without surface preparation.
This species can be used for steam bending.
No particular problems.
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, NAVAL CONSTRUCTION, boat deck, port storage
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