European Ash
Scientific name:
Fraxinus excelsior L.; F. angustifolia Vahl;
Geographic origin:
Europe, including Britsh Islands, North Africa and East Asia.
- Sapwood and heartwood: white to white pinkish.
- Fiber: straight.
- Grain: medium size.
- Characteristic defects: knots of partridge eyes,alse dark core.
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Capacity of being impregnated
- Medium capacity of being impregnated.
Mechanical properties
- Resistance to static flexion 1130 kg/cm2.
- Elasticity module 129,000 kg/cm2.
- Resistance to compression 510 kg/cm2.
- Resistance to parallel traction 1450 kg/cm2.
Mechanization
- Sawing process: easy and with no difficulties.
- Drying process: easy. From fast to medium-slow speed process.
- Planing process: easy. It is easily bent.
- Gluing process: easy, except in those cases of resorcine adhesive use.
- Nailing and screwing process: pre-drilling is required.
- Finish: easy.
Physical properties
- Apparent density at 12% humidity 690 kg/m3 semi-heavy wood.
- Dimensional stability
- - Volumetric contraction coefficient 0.45 % variation from stable to nervous wood.
- - Relation between contractions 1.64% no tendency to deformity.
- Hardness (Chaláis-Meudon) 4.2 semi-hardwood .
Observations
- Pot tenir la zona central del tronc d'un color fosc olivaci.
- Existeix també el freixe americà, bastant abundant en Estats Units i Canadà. Té aspectes i característiques molt similars a l'europeu
