Fir

  • Picea abies Karst
  • English: Red fir
  • Center, south and north of Europe.

Sapwood and Heartwood

Description

Sapwood: yellowish white.
Heartwood: reddish yellow.
Fiber: right.
Grain: from medium  to small size.
Characteristic defects: it has a large number of small, healthy and lively knots.

Applications

Interior carpentry. Laminated wood; Interior carpentry for panelling, friezes, frames, preframes, molding, baseboads.
Decorative panels.
Musical instruments.
Containers and packings .

Capacity of being impregnated

Sapwood: low capacity of being impregnated.
Heartwood: no capable of being impregnated.

Mechanization

Sawing process: easy and with no difficulties.
Drying process: fast, with risk to crack formation.
Planing process: no difficulties.
Gluing process: good.
Nailing and screwing process: tendency to crack formation. Little resistance to be pulled away.

Physical properties

Apparent density at 12% humidity 450 kg/m3 light wood.
Dimensional stability
- Volumetric contraction coefficient 0.44 % stable wood.
- Relation between contractions 2.1% bending tendency.
Hardness (Chaláis-Meudon) 1.5 softwood .

Mechanical properties

Resistance to static flexion: 710 kg/cm2
Elasticity module: 110,000 kg/cm2
Resistance to compression: 450 kg/cm2

Observations

&;8226; Slow growth wood.
&;8226; It is called ''Flanders'' in certain places of Spain.


Aviso

Aviso