European Oak

Scientific name: Quercus robur L; Q. petreae (Matts) Liebl

Geographic origin: Europe, Asia Minor and North Africa.

Description

  • Sapwood: light yelllow.
  • Heartwood: varies from yellowish brown to brown.
  • Fiber: straight.
  • Grain: medium size.
  • Characteristic defects: small knots.

Capacity of being impregnated

  • Sapwood: capable of being impregnated.
  • Heartwood: no capable of being impregnated.

Mechanization

  • Sawing process: no difficulties, excepting hardness.
  • Drying process: slow. Risk of collapse and crack formation.
  • Planing process: those ones are characteristics of its hardness.
  • Gluing process: difficulties can arise from the use of alkaline glues and acid adhesives.
  • Nailing and screwing process: easy, excepting its hardness.
  • Finish: risk of reacting against acid products.

Physical properties

  • Apparent density at 12% humidity 710 kg/m3 semi-heavy wood.
  • Dimensional stability
  • - Volumetric contraction coefficient 0.48 % nervous wood.
  • - Relation between contractions 1.85% medium tendency to deformity.
  • Hardness (Chaláis-Meudon) 5.8 hardwood .

European Oak

Mechanical properties

  • Resistance to static flexion 1,070 kg/cm2.
  • Elasticity module 115,000 kg/cm2.
  • Resistance to compression 580 kg/cm2.
  • Resistance to parallel traction 1.070 kg/cm2 .

European Oak

Observations

English Oak