Scientific name

Betula pendula Roth.
B. pubescens Ehrh

Other names

English: Birch

Geographic origin

Europe

Description

&;8226; Sapwood and Heartwood: from yellowish white to slightly orangey white
&;8226; Fiber: Straight, occasionally wavy
&;8226; Grain: Thin
&;8226; Defects: small knots, small rots

Capacity of being impregnated

&;8226; Capable of being impregnated to medium capacity of being impregnated

Mechanization

&;8226; Sawing process: Easy and with no difficulties
&;8226; Drying process: Easy and Fast, with nearly no defects.
&;8226; Planing process: Easy.
&;8226; Gluing process: Easy
&;8226; Nailing and screwing process: pre-drilling is recommended
&;8226; Finish: Irregular dyeing. No difficulties on varnish taking.

Physical properties

&;8226; Apparent density at 12% humidity 650 kg/m3 semi-heavy wood
&;8226; Dimensional stability
&;8226; Volumetric contraction coefficient 0.38 % stable wood
&;8226; Relation between contractions
1.4% no tendency to deformity
&;8226; Hardness (Chaláis-Meudon)
3.1 semi-hardwood

Mechanical properties

&;8226; Resistance to static flexion 1,548 kg/cm2
&;8226; Elasticity module 170,000 kg/cm2
&;8226; Resistance to compression 526 kg/cm2

Observations

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