Birch

Scientific name: Betula pendula Roth.
B. pubescens Ehrh

Geographic origin: Europe

Description

  • Sapwood and Heartwood: from yellowish white to slightly orangey white
  • Fiber: Straight, occasionally wavy
  • Grain: Thin
  • Defects: small knots, small rots

Capacity of being impregnated

  • Capable of being impregnated to medium capacity of being impregnated

Mechanization

  • Sawing process: Easy and with no difficulties
  • Drying process: Easy and Fast, with nearly no defects.
  • Planing process: Easy.
  • Gluing process: Easy
  • Nailing and screwing process: pre-drilling is recommended
  • Finish: Irregular dyeing. No difficulties on varnish taking.

Physical properties

  • Apparent density at 12% humidity 650 kg/m3 semi-heavy wood
  • Dimensional stability
  • Volumetric contraction coefficient 0.38 % stable wood
  • Relation between contractions 1.4% no tendency to deformity
  • Hardness (Chaláis-Meudon) 3.1 semi-hardwood

Birch

Mechanical properties

  • Resistance to static flexion 1,548 kg/cm2
  • Elasticity module 170,000 kg/cm2
  • Resistance to compression 526 kg/cm2

Birch

Observations

It is a highly valued wood thanks to its light colour.