Common name : ACAJOU D'AFRIQUE |
Family : MELIACEAE |
Scientific name(s):Khaya anthotheca
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| LOG DESCRIPTION WOOD DESCRIPTION |
Diameter:from 80 to 120 cm |
Colour: Red brown |
Thickness of sapwood : from 3 to cm 8 |
Sapwood: Clearly demarcated |
Floats : Yes |
Texture: Medium |
Durability in forest : Moderate (treatment recommended) |
Grain: Interlocked |
Note:
Sometimes, presence of tension wood and brittleheart.
Wood pink brown to deep red with copper reflection.
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| PHYSICAL PROPERTIES |
MECHANICAL PROPERTIES |
physical and mechanical properties are based on mature heartwood specimens. These properties can vary greatly depending on origin and growth condition. |
|
Mean |
Standard Deviation |
|
Mean |
Stardard Deviation |
Density*: |
0.57 g/cm3 |
0.08 |
Crushing strength* |
46 MPa |
7 |
Monnin hardness*: |
2.5 |
0.4 |
Static bending strength*: |
77 MPa |
13 |
Coef of volumetric shrinkage |
0.39% |
0.03 |
Modulus of elasticity |
11820 MPa |
1261 |
Total tangential shrinkage |
5.5% |
0.5 |
Fibre saturation point |
28 % |
|
Total radial shrinkage |
3.7% |
0.8 |
Stability: |
Moderately stable |
(*:at 12%moiture content : 1 MPa=1 N/mm2) |
Note
K.grandifoliola is fairly hard. Physical and mechanical properties of K. ivorensis are lower than other species. |
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| NATURAL DURABILITY AND TREATABILITY |
| Fungi and termite resistance refers to end-uses under temperate climate |
| Except for special comments on sapwood, natural durability is based on mature heartwood |
| Sapwood must always be considered as non-durable against wood degrading agents. |
| Fungi : |
Class 3 moderately durable |
| Dry wood bores : |
Durable, sapwood demarcated(risk limited to aspwood) |
| Termites : |
Class S-Susceptible |
| Treatability : |
4 - not permeable |
| Use class*: |
2 - inside or under cover (dampness possible) |
| Note :This species is listed in the European standard NF EN 350-2The AFRICAN MAHOGANY cannot be used without appropriate preservative treatment forend-uses under use class 3, except for some parts of a work such as windows, less exposed thanothers (entrance doors, shutters …) |
| MAIN LOCAL NAMES |
| Countries Local names |
Countries Local names |
| Angola N'DOLA |
Nigeria OGWANGO |
| Angola UNDIA NUNU |
Uganda ERI KIRE |
| Benin Kaju |
Uganda ERI KIRE |
| Cameroon MANGONA |
Uganda MUNYAMA |
| Cameroon N'GOLLON |
France ACAJOU BASSAM |
| Congo N'DOLA |
France ACAJOU BLANC |
| Côte d'Ivoire ACAJOU BASSAM |
Germany KHAYA MAHOGANI |
| Côte d'Ivoire ACAJOU BLANC |
United Kingdom AFRICAN MAHOGANY |
| Côte d'Ivoire KRALA |
United Kingdom HEAVY AFRICAN MAHOGANY |
| Equatorial Guinea CAOBA DEL GALON |
| Equatorial Guinea ZAMANGUILA |
| Gabon ZAMINGUILA |
| Ghana AFRICAN MAHOGANY |
| Ghana AHAFO |
| Ghana TAKORADI MAHOGANY |
| Nigeria AKUK |
| ACAJOU D'AFRIQUE |
| REQUIREMENT OF A PRESERVATIVE TREATMENT |
| Against dry wood borer attacks:
Does not require any preservative treatment
In case of temporary humidification risk: Requires appropriate preservative treatment |
In case of permanent humidification risk: |
Use not recommended |
Drying rate: Rapid |
M.C. (%) |
Temperature (°C) |
Air |
Risk of distortion: Slight risk |
Green 50 47 84 |
dry-bulb wet bulb |
humidity(%) |
Risk of casehardening: No |
40 50 45 75 |
Risk of checking: Slight risk |
30 55 47 67 |
Risk of collapse: No |
20 70 55 47 |
| |
15 75 58 44 |
| This schedule is given for information only and is applicable to thickness < 38 mm.It must be used in compliance with the code of practiceFor thickness from 38 to 75 mm , the air relative humidity should be increased by 5 % at each stepFor thickness over 75 mm , a 10 % increase should be considered |
| Note: Risks of distortion may increase in presence of tension wood or interlocked grain occasionnally high |
| SAWING AND MACHINING |
| Blunting effect: Normal |
| Sawteeth recommended: Ordinary or alloy steel |
| Cutting tools : Ordinary |
| Peeling : Good |
| Slicing : Good |
| Note : Tendency to woolliness(tension) in sawing. Risks of tearing (interlocked grain) planning. Ribbon like aspect on quatersawn |
| ASSEMBLING |
| NAILING/Screwing |
Good |
| Gluing |
Correct |
| END_USES |
| Main known end-uses; they must be implented according to the code of practice.Important remark; some end-uses are mentioned for information (tradisional, regional or ancient end-uses) |
| Note : Pores sometimes filled with black deposits. Sawdust may cause irritation. Filling is recommended to obtain a better finish |
Cabinetwork(high class furniture) |
Current furniture or furniture components |
Sliced veneer |
Interior panelling |
Ship building(planking and deck |
Open boats |
Veneer for back or face of plywood |
Exterior joinery |
Interior joinery |
Exterior panelling |
Light carpentry |
English
France
