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| TRADE NAME |
: |
OKAN |
| SCIENTIFIC NAME |
: |
Cylicodiscus gabunensis Harms |
| FAMILY |
: |
Mimosaceae |
 |
| REGIONAL DISTRIBUTION |
: |
West Africa - Central Africa
Ivory Coast : BOUEMON
Ghana : BENYA, ADADUA
Nigeria : OKAN
Cameroon : ADOUM, BOKOKA, AFRICAN GREENHEART
Gabon : EDOUM, ODUMA
Congo : N' DUMA
Pr. = NERL. (large possibilities) Ex. = OCC.
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| SAPWOOD |
: |
Clearly demarcated, greyish pink, 5 cm |
| HEARTWOOD |
: |
|
- Colour : Yellow-brown to golden brown, with greenish tinge
- Grain : Slightly/occasionally interlocked to highly/frequently interlocked
- Texture : Medium to coarse
- Silver figure : Fine
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| TECHNOLOGICAL PROPERTIES |
- Green weight (kg/m3) = 1000 - 1100
- Specific gravity at 12% M.C. (kg/m3) MV12 = (heavy) 910
- Volumetric swelling for 1% MC variation V% = (large movement) 0.61
- Total tangential swelling T% = 8.6
- Total radial swelling R% = 6.2
- Crushing strength (N/mm2) C12 = 82
- Static bending strength (N/mm2) F12 = 187
- Modulus of elasticity (N/mm2) E12 = 18000
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| END USE |
- Railways sleepers
- Marine piling and dockwork
- Heavy-duty flooring
- Wagon trays
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| REMARKS |
- Natural durability : Very durable
- Lyctus susceptibility : No
- Preservative treatment : Resistant
- Other remarks :
- An alternate for AZOBE and GREENHEART.
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