Doussie
Scientific name:
Afzelia spp
Geographic origin:
Africa
- Sapwood: yellowish white colour.
- Heartwood: reddish brown.
- Fiber: straight, occasionally slightly wavy.
- Grain: medium size.
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Capacity of being impregnated
- Sapwood: medium capacity of being impregnated.
- Heartwood: no capable of being impregnated.
Mechanical properties
- Resistance to static flexion 1,730 kg/cm2 .
- Elasticity module 137,000 kg/cm2.
- Resistance to compression 740 kg/cm2.
- Resistance to parallel traction 1,200 kg/cm2.
Mechanization
- Sawing process: ordinary difficulties due to hardness.
- Drying process: quite slow. Low risk of deformation and crack formation.
- Planing process: easy. Risk of repelling on intertwined fibers.
- Gluing process: no difficulties.
- Nailing and screwing process: pre-drilling is required due to hardness.
- Finish: rubber deposits can locally hamper varnish adherence.
Physical properties
- Apparent density at 12% humidity 790 kg/m3 heavy wood.
- Dimensional stability
- - Volumetric contraction coefficient 0.34% highly stable wood.
- - Relation between contractions 1.4% no tendency to deformity.
- Hardness (Chaláis-Meudon) 7.4 hardwood.
Observations
- Doussié. Afzelia, Vitacola, Lingue.
- La Albura és recomanable no utilitzar-la.
