::Iroko::

France

 

Also known as: odum (Ghana and Ivory
Coast), mvule (East Africa), kambala (Zaire),
bang (Cameroons), moreira (Angola), tule,
intule (Mozambique)
Hardwood
Formerly known as Milicia excelsa Benth. and Hook f.and Milicia regia
A. Chev.
Listed in the IUCN Red List of Threatened Species as LR – Lower Risk(near thr eatened): close to being classed as Vulnerable. Also meets CITES Appendix II
C. regia is confined to West Africa,  where it occurs from Senegal to
Ghana. There does not appear to be any significant difference between the
timber of the two species.
C. excelsa attains very large sizes, reaching 45m o r more in height and up
to 2.7m in diameter. The stem is usually  cylindrical and mostly without buttresses. It occurs in the rain and mixed deciduous forests.
When freshly  cut, or when unexposed to light, the heartwood is a distinct
yellow colour, but on exposure to light it quickly  becomes  golden-brown.
The sapwood is narrow, being  about 50mm to 75mm wide, and clearly
defined. The grain is usually interlocked and the texture is rather coarse
but even, and the wood weighs on average 660 k g/m³ when dried. Large,
hard deposits of calcium carbonate called 'stone' deposits, are sometimes
present in cavities, probably as a result of injury to the tree. They are often 
enclosed by the wood and not visible until the time of sawin g, 
though the wood around them may be darker in colourindication of their presence


The timber dries well and fairly rapidly, with only a slight tendency to distortion and splitting.

Iroko has excellent strength properties, comparing well with teak, though weaker in bending and in compression along the grain
Medium to difficult - Iroko works fairly well with most tools, though with
some dulling effect on their cutting  edges, especially when calcareous
deposits are prevalent. On quarter-sawn stock, there is a tendency for grain
to pick up due to interlocked grain, and a reduction of cutting an gle to 15°
is usually necessary to obtain a smooth surface. An excellent finish can be
obtained if the grain is filled. It takes nails and screws well, and can be glued satisfactorily.

Durability Durable
Treatability Extremely difficult
Moisture Movement   Small
Density (mean, Kg/m³)   660 ( )
Texture Medium
Availability Regular
Price Low to medium
Chemical properties Occasional deposits of stone may occur
Use(s)   Bridge construction, Exterior joinery, Interior joinery, Cladding
Colour(s)   Yellow brown
  •  Iroko (Origin: Imported  - Strength Grade: HS - Strength Class: Species/grade specific data)

 



 

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