Cylicodiscus gabunensis
African "greenheart"
Other names
| International recognized trade name (ATIBT) | Okan | |
| Deutsch | okan | |
| English | African "greenheart" | |
| Français | okan | |
| Italiano | okan | |
| Suomi | okan | |
| Norsk | okan | |
| Čeština | okan | |
| Español | okan | |
| Svenska | okan | |
| Polski | okan | |
| Український | okan | |
| Român | okan | |
| Русский | okan | |
| Български | okan | |
| EESTI | okan | |
| 日本語 | okan | |
| Other names | adoum, bokoka (CM); bouémon (CI); oduma, edoum (GA); adadua, benya, denya (GH); n'duma (CG); Denya |
Origin
| Geographic Regions | Western Africa; Congo Basin | |||
| States and Territories | Nigeria; Ivory Coast; Ghana; Gabon; Equatorial Guinea; Cameroon | |||
Botany
| Reich | Plantae | |||
| Tribe | Tracheophyta | |||
| Gymnosperm | Angiosperm | |||
| Class | Magnoliopsida | |||
| Order | Fabales | |||
| Family | Fabaceae | |||
| Genus | Cylicodiscus | |||
| Species | gabunensis | |||
| Author citation | Harms | |||
| Scientific name | Cylicodiscus gabunensis Harms | |||
Habitus
| Wood type | Hardwood | |||
| Growth habit | Baum | |||
Microscopic features
| Containers | zerstreutporig | |||
| Intkey | https://www.delta-intkey.com/wood/de/www/mimcygab.htm | |||
Macroscopic features
| Wood odor | Ausgeprägter Geruch | |||
| Growth ring boundaries | clearly recognizable | |||
| Heartwood | with color stripes | |||
| Strip in the heartwood | Ohne Farbstreifen | |||
| Color heartwood | gelb/goldgelb rotbraun kupferfabiger Schimmer | |||
Natural durability
(according to EN 350)
| Mushrooms field | DC 1 | |||
| Beetle | D | |||
| Termites | D | |||
| Lithophagous molluscs | D | |||
| Remarks | unangenehmer Geruch im nassen Zustand/D mit starkem Wechseldrehwuchs /E with strongly interlocked grain /F avec un contrefil très accusé /P com grã fortemente entrecruzada /S con hilo fuertemente entrecruzado | |||
Impregnability
(according to EN 350)
| Impregnability of heartwood | 4 | |||
| Impregnability of the sapwood | 3 | |||
| Width of the sapwood | s | |||
Physical properties
| Shrinkage radial, mean | 4.00 | % | ||
| Shrinkage tangential, mean | 7.30 | % | ||
Raw density oven-dried u =12%
(e.g. according to EN 350)
| Density, oven dry u =12%, lower limit | 850.00 | kg/m3 | ||
| Density, oven dry u =12%, mean value | 920.00 | kg/m3 | ||
| Density, oven dry u =12%, upper limit | 960.00 | kg/m3 | ||
Mechanical properties
| Flexural strength, mean | 130.00 | N/mm2 | ||
| Shear strength, mean | 20.00 | N/mm2 | ||
| Young's modulus, mean | 17200.00 | N/mm2 | ||
Machining of tropical woods
(Provided by: Precius Woods)
| Machine processing | difficult | |||
| Note on machine processing | High density causes dulling on the tool | |||
| Predrilling | necessary | |||
| Gluing | difficult | |||
Janka hardness
| Parallel | 12300 | %/% | ||
Shrinkage rate fresh to 65% RH &phi (approx. 12% EMC)
| Radial | 3 | % | ||
| Tangential | 3.5 | % | ||
Areas of application
| Marine; Street & Garden; Construction |
Appearances
Wood
Cylicodiscus gabunensis , ©Dennis Wilson
Cylicodiscus gabunensis , ©Precious Woods