Koto
- Pterygota bequaertii De Wild
- English: Koto, Pterigota
- West Africa and Central Africa
Colour and estimated photographic reproductions
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Description
&;8226; Fiber: Straight, Slightly intertwined fibers are very frequent.
&;8226; Grain: medium size to rough
Applications
&;8226; Furniture Interior
&;8226; Interior carpentry, doors, paneling, molding, baseboad, friezes.
&;8226; Plywood board
&;8226; Interior carpentry, doors, paneling, molding, baseboad, friezes.
&;8226; Plywood board
Capacity of being impregnated
Capable of being impregnated
Mechanization
&;8226; Sawing process: No difficulties.
&;8226; Drying process: Medium speed. High risk of deformation and crack formation
&;8226; Planing process: No difficulties excepting risk of repelling on pieces of intertwined fibers
&;8226; Gluing process: No difficulties
&;8226; Nailing and screwing process: No difficulties.
&;8226; Finish: No difficulties
&;8226; Drying process: Medium speed. High risk of deformation and crack formation
&;8226; Planing process: No difficulties excepting risk of repelling on pieces of intertwined fibers
&;8226; Gluing process: No difficulties
&;8226; Nailing and screwing process: No difficulties.
&;8226; Finish: No difficulties
Physical properties
&;8226; Apparent density at 12% humidity
600 kg/m3 madera de semiligera a Heavy
&;8226; Dimensional stability
- Volumetric contraction coefficient
0.52 % variation from nervous wood to very nervous wood
- Relation between contractions
2.2% much tendency to deformity
&;8226; Hardness (Chaláis-Meudon) 2.3 Semi-softwood
600 kg/m3 madera de semiligera a Heavy
&;8226; Dimensional stability
- Volumetric contraction coefficient
0.52 % variation from nervous wood to very nervous wood
- Relation between contractions
2.2% much tendency to deformity
&;8226; Hardness (Chaláis-Meudon) 2.3 Semi-softwood
Mechanical properties
&;8226; Resistance to static flexion 1,000 kg/cm2 &;8226; Elasticity module 100,000 kg/cm2
&;8226; Resistance to compression 525 kg/cm2
&;8226; Resistance to parallel traction 900 kg/cm2
&;8226; Resistance to compression 525 kg/cm2
&;8226; Resistance to parallel traction 900 kg/cm2
