European White Oak
Scientific name:
Quercus robur L; Q. petreae (Matts) Liebl
Geographic origin:
Europe, Asia Minor and North Africa.
- Sapwood: light yelllow.
- Heartwood: varies from yellowish green
- Fiber: straight.
- Grain: medium size.
- Characteristic defects: small knots.
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Capacity of being impregnated
- Sapwood: capable of being impregnated.
- Heartwood: no capable of being impregnated.
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 .
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 .
Observations
