Scientific name

Guarea cedrata Pellegr.; G. laurentii De Wild.

Other names

English: Bosse

Geographic origin

Africa

Description

&;8226; Sapwood: light brown
&;8226; Heartwood: pink brown.
&;8226; Fiber: Straight, occasionally slightly intertwined
&;8226; Grain: Thin to medium size

Capacity of being impregnated

&;8226; Sapwood: Capable of being impregnated
&;8226; Heartwood: No capable of being impregnated

Mechanization

&;8226; Sawing process: Easy, except in those cases of silica presence, producing allergies and a fast debilitation of the saw's jagged edges.
&;8226; Drying process: Medium speed. Medium risk of deformation and crack formation
&;8226; Planing process: No difficulties excepting those named cases of silica and the risk of repelling on pieces of intertwined wood.
&;8226; Gluing process: No difficulties
&;8226; Nailing and screwing process: No difficulties
&;8226; Finish: No difficulties, except in those cases of resin exudations , they can be usual

Physical properties

&;8226; Apparent density at 12% humidity
600 kg/m3 fom semi-light wood to semi-heavy wood
&;8226; Dimensional stability
- Volumetric contraction coefficient 0.43 % variation from stable wood to slightly nervous wood
- Relation between contractions 1.61 no tendency to deformity
&;8226; Hardness (Chaláis-Meudon) 3.6 semi-hardwood

Mechanical properties

&;8226; Resistance to static flexion 1.100 kg/cm2
&;8226; Elasticity module 109.000 kg/cm2
&;8226; Resistance to compression 510 kg/cm2

Observations

Light Sapwood colour and dark Heartwood
It is sometimes wrongly called Cedar
There are important colour differences deppending on its origin.