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  HARDWOOD EUROPE:
ALDER

 

 
NAMES: Alder
BOTANICAL NAME: Alnus glutinosa Gaertn.
ORIGIN AND SPREAD: Europe, Northern Africa; Northern boarder 63 65 N
MACROSCOPIC CHARACTERISTIC FEATURES: After chopping when air comes to wood, wood is orange-red, then it turns to reddish-white, getting darker; not very decorative; boarder of annual rings and ---- clearly visible

IMPORTANT TECHNOLOGICAL FEATURES:

Dry density (grams/cbm) 0,45 0,51 0,60
Volume shrinking tolerance (in %) 12,6 14,2
Pressure strength (Newton/qm) 31 55 77
Bending strength (Newton/qm) 44 97 170
Tensile strength (Newton/qm) 55 84 170
E-Module 7 700 11 600

PROCESS AND USE:

Good to slice and peel; no great tendency to tear; good to stain and varnish; poor natural durability;

Sliced- and peeled logs for face veneer; chip-, fibre- and paper industry

Joineries, toys, music instruments; for turning and carving
SPECIFIC CHARACTERISTICS: for the veneer industry

Approx. 30 Alnus kinds are known