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Tiama
Entandrophragma angolense C.DC.
MELIACEAE
Gedur-nohor (Nigeria); Tiama (Côte d`Ivoire); Gedur-nohor (United Kingdom); M'vovo (Zaire); Zizia; Zize-plehi; Tshimaye blanc; Tshimaie tsitoke; Timbi; Tiama-tiama; Penkwa; Ounabo; Njilei; Muyovu; Lukru; Lokobo; Krobra; Kikura; Keguigo; Kahiguigo; Jebu mahogany; Ipaki; Ijebu; Gedu nohor; Gedu noha; Gedu lohor; Eyin igedu; Esaka; Egin-igedu; Dukuma; Dubo; Digbo; Budongo mahogany; Brown mahogany tiama; Bodongo; Baka-biraingui; Baeko; Acajou tiama; Abenbegne; Kalungi (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
Swietenia angolensis Welw. ex C.DC.; Entandrophragma macrophyllum A. Chev.; Entandrophragma leplaei Vermoes.
The tree reaches a height of 50 m. The bole is moderately straight and cylindrical, up to 20 to 26 m in length. It attains a diameter of 130 up to 230 cm over the large buttresses and wide-spreading root ridges.
Entandrophragma angolense is found in the rain and deciduous forests and also in transitional formations.
West, Central and East Africa
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.
Texture is reported to be medium to coarse.
This species is 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 stresses are reported to be absent.
Silica Content: Negligible content of silica is reported. Amounts 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.
0.52
0.57
7.3
4.7
Drying Defects: Risk of warping.
FR-9
1.6
858
114612
507
63
74
393
498
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.
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