Common walnut
Denominación científica:
Juglans regia L.
Procedencia geográfica:
Southeast Europe, west Asia, northwest India and Himalaya.
- Sapwood: from yellowish to greyish colour.
- Heartwood: from greyish colour to brown colour with black shades.
- Fiber: straight, occasionally wavy.
- Grain: medium size.
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Impregnabilidad
- Sapwood: medium capacity of being impregnated.
- Heartwood: low capacity to no capacity of being impregnated.
Propiedades mecánicas
- Resistance to static flexion 970 kg/cm2.
- Elasticity module 113,000 kg/cm2.
- Resistance to compression 590 kg/cm2.
- Resistance to parallel traction 970 kg/cm2.
Mecanización
- Sawing process: no difficulties.
- Drying process: considerably fast. Risk of collapse and cementation.
- Planing process and other processes: no difficulties.
- Gluing process: difficulties can arise from the use of alkaline glues.
- Nailing and screwing process: easy.
- Finish: easy.
Propiedades físicas
- Apparent density at 12% humidity 650 kg/m3 semi-heavy wood.
- Dimensional stability
- - Volumetric contraction coefficient 0.34 % highly stable wood.
- - Relation between contractions 1.45% no tendency to deformity.
- Hardness (Chaláis-Meudon) 3.8 semi-hardwood .
Observaciones
- Rellevant diferència de color entre la albura molt clara i el duramen fosc