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ARAMON (Maranthes robusta)
Trade Name
Aramon
Scientific Name
Maranthes robusta Prance
Family
CHRYSOBALANACEAE
Common Names
Oghoyé (Nigeria); Aramon (Côte d`Ivoire); Ekoulebang (Gabon); essou (Congo); Oku (Central African Republic); n'ko (Cameroon); Bokanga (Cameroon); Asila (Cameroon); Aramon
Scientific Name Synonyms
Parinari robusta Oliv.
Description Of The Tree
Botanical Description
The tree reaches a height of 13 to 40 m, with trunk diameters up to 130 cm. The bole is cylindrical and its length varies with region of growth.
Natural Habitat
Maranthes robusta occurs in swamp forests, but also in evergreen and deciduous forests inland. It is abundant in savanna forests and on riversides.
Non Timber Uses
Contains some resins or extracts which could pose problems when machining or finishing.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels exclusively solitary (over 90%). Vessels of two distinct diameter classes, wood not ring-porous. Tangential diameter of vessel lumina 200 micras or more (large). Tangential diameter of vessel lumina 100 micras or less (very small) Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma in discontinuous tangential lines. Helical thickenings in axial parenchyma cells present. Non-crystals in axial parenchyma cells. Over 9 cells per parenchyma strand. Axial pare Rays non-storied. Rays exclusively uniseriate. Silica bodies in the ray cells. All ray cells upright and/or square. Non-septate fibers. Fibers with distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is yellowish, it has a thickness of 3 cm. The heartwood is pinkish brown, it is clearly demarcated.
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
A coarse texture is reported in this species.
Luster
Luster is usually low.
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. Resistant to termites attack. The hear
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Resistance To Impregnation
Difficult to treat with only a low penetration of the preservative products.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.87
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
1.01
Recommended Dry Kiln Schedule
FR-12
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1755
Stiffness (MOE) 12%MC (kgf/cm²)
271561
Compression parallel to fiber 12%MC (kgf/cm²)
936
Compression perpendicular to fiber 12%MC (kgf/cm²)
143
Janka hardness (side) 12%MC (kgf)
1287
Janka hardness (end grain) 12%MC (kgf)
1278
Workability
Sawing
Sawing of this species requires powerful equipment.
Rotary Veneer Cutting
Not suitable for veneering.
Sliced Veneer
Not suitable for veneering.
Blunting Effect
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
Machining
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Planing
Rather difficult; special tools are needed.
Moulding
Moderately easy; tools must be cautiously sharpened.
Boring
Moderately easy; tools must be cautiously sharpened.
Mortising
Moderately easy; tools must be cautiously sharpened.
Nailing
Pre-boring is necessary.
Gluing
Difficult to glue because of high density.
Sanding
Easy to perform; it gives good results.
Polishing
Needs pre-coating.
Response To Hand Tools
Working with hand tools is difficult.
REFERENCED USES
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