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Eyoum
Dialium dinklagei Harms
LEGUMINOSAE
Pau veludo (Guinea-Bissau); Kofina (Côte d`Ivoire); Afambéou (Côte d`Ivoire); Kasudu (Zaire); Bongola (Zaire); Omvong (Gabon); Eyoum (Gabon); Penzi (Congo); Mfang (Cameroon); M'fan (Cameroon); Ziba (Mozambique)
Dialium staudtii Harms; Dialium klainei Pierre ex Harms
A medium-sized tree to a height of 23 m with a spreading crown. The bole has usually small sharp buttresses. The trunk diameter reaches 70 to 100 cm.
Dialium dinklagei is found in evergreen and deciduous forests, sometimes in marshy places.
Central Africa, from Guinea to the Democratic Republic of the Congo.
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. Vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. V Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma in continuous tangential lines or fine bands. Axial parenchyma storied. Siliceous bodies in the axial parenchyma cells. 3 to 4 cells per parenchyma strand. Axial parenchyma bands mor 4 to 10 rays per mm (medium). Rays storied. Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). 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.
Unrestricted
The sapwood is whitish, it has a thickness of 3 to 5 cm. The heartwood is dark pink-brown, dark red or almost black, with occasional small markings, it is clearly demarcated.
3
Straight or slightly interlocked; grain has no particular influence on drying, machining and finishing qualities.
This species is usually reported to have a medium texture.
The wood surface is described as low in luster.
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
1
Residual growth stresses are absent.
Silica Content: This timber is reported to have a negligible silica content. Silica contents over 0.05% may affect wood processing. Silica Value: 0.01
Nearly impossible to treat with a too much low penetration of the preservative substances.
0.82
0.94
7.7
4.7
FR-12
1.6
1591
223826
809
118
99
1099
1127
Sawing of this species requires powerful equipment.
Suitable for slicing.
Suitable for slicing.
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Rather difficult; special tools are needed.
Moderately easy; tools must be cautiously sharpened.
30
Moderately easy; tools must be cautiously sharpened.
Moderately easy; tools must be cautiously sharpened.
Pre-boring is necessary.
Difficult to glue because of high density.
Easy to perform; it gives good results.
Can be polished without surface preparation.
Working with hand tools is difficult.
EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, beams, flooring, parquet, frames, steps, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, PACKING, heavy packing, CONTAINERS, cooperage, truck bodies, truck flooring
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