Khaya
Denominación científica:
Scientific name: Khaya spp <br />
Procedencia geográfica:
Center, west and east of Africa.
- Sapwood: pink white.
- Heartwood: varies from pink brown to light red that darkens with the light effects.
- Fiber: straight, usually intertwined and of small to medium size.
- Grain: medium size.
- Characteristic defects: growth tensions, soft core.
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Impregnabilidad
- Sapwood: medium capacity of being impregnated.
- Heartwood: no capable of being impregnated.
Propiedades mecánicas
- Resistance to static flexion 760 kg/cm2.
- Elasticity module 94,000 kg/cm2.
- Resistance to compression 460 kg/cm2.
- Resistance to parallel traction of fibers 600 kg/cm2.
Mecanización
- Sawing process: easy, although there is a risk of deformation due to growth tensions.
- Drying process: easy and fast. Low risk of deformation, with mainly intertwined wood.
- Planing process: risk of repelling with intertwined fiber pieces.
- Gluing process: no difficulties.
- Nailing and screwing process: easy.
- Finish: no difficulties.
Propiedades físicas
- Apparent density at 12% humidity 510 kg/m3 semi-light.
- Dimensional stability
- Volumetric contraction coefficient 0.41 % stable wood.
- Relation between contractions 1.52% no tendency to deformity.
- Hardness (Chaláis-Meudon) 1.9 softwood.
Observaciones
- També se la coneix amb el nom de Samanguila.
- Clara diferència de color entre l'albura i el duramen.
- Com que pot tenir la fibra entrellaçada, després del raspallat pot seguir quedant el que anomenem “repel·lo”, ja que les fulles no tallen bé la fibra i ho que fan és arrencar-la.
