European Ash

Scientific name: Fraxinus excelsior L.; F. angustifolia Vahl;

Geographic origin: Europe, including Britsh Islands, North Africa and East Asia.

Description

  • Sapwood and heartwood: white to white pinkish.
  • Fiber: straight.
  • Grain: medium size.
  • Characteristic defects: knots of partridge eyes,alse dark core.

Capacity of being impregnated

  • Medium capacity of being impregnated.

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 .

European Ash

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.

European Ash

Observations

  • The central part of the trunk can have a dark olive colour.
  • There is also the american ash, quite common in United States and Canada and very similar to the european ash.