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ACAJOU D`AFRIQUE (Khaya ivorensis)

Trade Name

Acajou d`Afrique

Scientific Name

Khaya ivorensis A.Chev.



Common Names

Lagos mahogany (Nigeria); Takoradi Mahogany (Ghana); Acajou Bassam (Côte d`Ivoire); Acajou Bassam (France); African Mahogany (United Kingdom); Khaya Mahogany (Germany); Zaminguila (Gabon); Zamanguila (Equatorial Guinea); Caoba del Galon (Equatorial Guinea); N'Gollon (Cameroon); Undianunu (Angola); Zoele; Tiamatiama; Samanguila; Red mahogany; Orkogho; Ogurano; Ogurango; Odupon; Odupod; Oduben; Ngollon; Ngollo; Munyama; Lukuma; Lokobua; Krubna; Krala; Kortghot; Khaya; Humpe; Houngo; Ekuie; Dupuin; Dukumakokre; Dukuma-dugura; Dukuma; Diburi; Biribu; Biribi; Bariba; African mahogany; Acajou rouge; Acajou blanc; Acajou bassam; Ogwango (Nigeria); Dukuma fufu (Ghana); Dubini (Ghana); Acajou d`Afrique (Côte d`Ivoire)

Scientific Name Synonyms

Khaya klainei Pierre ex Pellegr.; Khaya caudata Stapf ex Hutch. & Dalz.

Description Of The Tree

Botanical Description

The tree reaches a height of more than 50 m. The bole is usually straight, clear and cylindrical to 30 m in length, buttressed. The trunk diameter attains 100 to 150 cm.

Natural Habitat

Khaya ivorensis is found in various habitat types in West and Central Africa but is most abundant in wet undisturbed evergreen forest. Log export bans and legal protection exist in various countries. National conservation status in Cote d`Ivoire V, Liber

Natural Distribution

From Sierra Leone and Liberia to Gabon. It is distributed through coastal West Africa.

Plantations Available?

Tested and planted in some African countries. In most cases, mixed plantations with other species (Niangon, Okoume, Bilinga). The duration of the rotation is 40 years, to reach 60 cm in diameter.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Brown-colored deposits in heartwood vessels. Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plat Occasionally axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays of two distinct sizes. Occasionally rays storied. Rays 1 to 2 seriate. Larger rays more than 4 seriate. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Septate fibers present. Fibers with simple to minutely bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section


Cites Status


General Wood Description


Light and pleasant odor.


The sapwood is creamy white to yellowish white, it has a thickness of 5 cm. The heartwood is pink to light red brown, it is clearly demarcated. The silver figure is fine.

COLOR INDEX (1=Black, 7=Light yellow,white)



The grain is slightly but systematically interlocked.


The wood is reported to be frequently medium textured.


The wood surface is described as low in luster.

Natural Durability

Moderately durable to decay. Without preservative treatment, this species can be used only under risk of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Sensible to termites attack. The heart

Natural durability index (1= Very high durability, 7=Vey low durability)


Internal Growth Stresses

Residual stresses are reported to be absent.

Silica Content

Silica Content: It is reported to have a negligible amount of silica. Contents over 0.05% may affect wood processing. Silica Value: 0.03

Resistance To Impregnation

Nearly impossible to treat with a too much low penetration of the preservative substances.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)


Air-dry Density (Weight and volume at 12%MC) (g/cm³)


Total shrinkage Tangential (Saturated to 0%MC) (%)


Total shrinkage Radial (Saturated to 0%MC) (%)


Drying Defects

Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks. Kiln Schedules: The kiln schedule has been tested.

Recommended Dry Kiln Schedule


Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)


Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)


Stiffness (MOE) 12%MC (kgf/cm²)


Compression parallel to fiber 12%MC (kgf/cm²)


Compression perpendicular to fiber 12%MC (kgf/cm²)


Shear strength radial 12%MC (kgf/cm²)


Janka hardness (side) 12%MC (kgf)


Janka hardness (end grain) 12%MC (kgf)




It is easy to saw.

Rotary Veneer Cutting

Suitable for slicing, also suitable for peeling if treated.

Sliced Veneer

Suitable for slicing, also suitable for peeling if treated.

Blunting Effect

Slight blunting effect; ordinary tools can be used for sawing and machining.


Machining of this species is reportedly easy.


Easy; no particular problems.


Moderately easy; tools must be cautiously sharpened.




Moderately easy; tools must be cautiously sharpened.


Moderately easy; tools must be cautiously sharpened.


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.

Steam Bending

Steam bending is difficult.

Response To Hand Tools

No particular problems.


End Uses Summary

HOUSING GENERAL, beams, joists, boards, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, NAVAL CONSTRUCTION, boats, boat hulls, boat deck, port storage

General Housing
  • 10 - Silica in Timbers
  • 11 - Prospect: The wood database
  • 12 - Tropical timbers of the world. Part I-Tropical American Species
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
  • 16 - Woods of the World
  • 17 - Tree Conservation Database
  • 18 - W3TROPICOS Missouri Botanical Garden
  • 19 - Silica in Timbers
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Luxury
  • 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
  • 24 - Empire Timbers
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
  • 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Decorative veneer
  • 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
  • 30 - Embassy of Honduras in Japan
  • 31 - Embassy of Colombia in Japan
Turned Articles
  • 32 - Embassy of Cote d`Ivoire in Japan
  • 55 - Tropical Timber Atlas of Latin America
  • 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Boat Hulls
  • 57 - Estadísticas de Aprovechamiento, Exportación y comercialización Nacional de Productos Forestales
Boat Decking
  • 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port Storage
  • 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I

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