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ANIéGRé (Gambeyobotrys gigantea)
Trade Name
Aniégré
Scientific Name
Gambeyobotrys gigantea Aubrev.
Family
SAPOTACEAE
Common Names
Koanandio (Côte d`Ivoire); Nom abam (Cameroon); Njuri (Cameroon); Njoli (Cameroon); Aningré
Scientific Name Synonyms
Gambeya gigantea (A. Chev.) Aubrev. & Pellegr.; Chrysophyllum giganteum A. Chev.
Description Of The Tree
Botanical Description
The tree reaches a height of more than 50 m with a straight cylindrical bole to 26 m in length. The trunk diameter attains 100 to 120 cm above the tall, symmetrical buttresses.
Natural Habitat
Natural Distribution
The genus is widespread in tropical Africa, particularly common in parts of East Africa.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels in radial multiples of 2 to 4. Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Intervessel pi Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma in continuous tangential lines or fine bands. Crystal sand in axial parenchyma cells. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Non-septate fibers. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is yellowish white to pale brown or pinkish brown, it is not clearly demarcated.
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The texture varies from fine to medium.
Luster
The wood is described as moderate in luster.
Natural Durability
Slightly durable to decay. This species needs preservative treatment for uses with risks of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. The heartwood is sensible to termites and Lyctus attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Internal Growth Stresses
Residual stresses are reported to be absent.
Silica Content
Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.01
Resistance To Impregnation
Easy to treat with a full penetration of the preservative products using vacuum-pressure method.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.51
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.55
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.9
Total shrinkage Radial (Saturated to 0%MC) (%)
3.8
Drying Defects
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions.
Recommended Dry Kiln Schedule
FR-4
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.8
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
860
Stiffness (MOE) 12%MC (kgf/cm²)
124413
Compression parallel to fiber 12%MC (kgf/cm²)
472
Compression perpendicular to fiber 12%MC (kgf/cm²)
57
Shear strength radial 12%MC (kgf/cm²)
59
Janka hardness (side) 12%MC (kgf)
376
Janka hardness (end grain) 12%MC (kgf)
480
Workability
Sawing
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
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
Machining
Possible difficulties caused by interlocked grain are reported.
Planing
Easy; no particular problems.
Moulding
Easy; no particular problems.
Turning
30
Boring
Easy; no particular problems.
Mortising
Easy; no particular problems.
Nailing
No particular problem.
Gluing
Glues well if basic gluing technical rules are followed.
Sanding
Easy to perform; it gives good results.
Polishing
Can be polished without surface preparation.
Response To Hand Tools
No particular problems.
REFERENCED USES
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, OTHER AND MUSICAL INSTRUMENTS, moldings
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Frames
- 16 - Woods of the World
Steps
- 17 - Tree Conservation Database
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Fittings
- 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
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Faces
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Decorative veneer
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Turning
- 30 - Embassy of Honduras in Japan
Ornaments
- 31 - Embassy of Colombia in Japan
Turned Articles
- 32 - Embassy of Cote d`Ivoire in Japan
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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