HARDWOOD
EUROPE:
ELM |
|
| NAMES: |
Elm |
| BOTANICAL NAME: |
Ulmus glabra
Huds.
Ulmus carpinifolia Gled |
| ORIGIN AND SPREAD: |
Europe, Norther
boarder till 65°N; often you find them with Hard Maple, Beech,
Ash and Lime trees. |
| MICROSCOPIC CHARACTERISTIC
FEATURES: |
-----pores of
spring wood rowed from 1 up to 3; --- |
| MACROSCOPIC CHARACTERISTIC
FEATURES: |
Boarder of annual
rings and pores of spring wood clearly visible; Sap is yellowish-white;
core is chocolate coloured, very decorative, Wood rays have dark
mirror/reflection very good to recognize |
|
IMPORTANT TECHNOLOGICAL FEATURES:
|
Dry density (grams/cbm) 0,44 – 0,80
Volume shrinking tolerance (in %) 11,8 – 13,7
Pressure strength (Newton/qm) 33 – 46 – 56
Bending strength (Newton/qm) 65 – 72 – 110
Tensile strength (Newton/qm) 65 – 80 – 210
E-Module 5
900 – 11 000 – 16 000 |
|
PROCESS
AND USE:
|
Good to stain and varnish, need
to dry slow, tends to tear and warp;
Mostly used as sliced veneer for
face veneer; special wood for sporting equipment and parts of
tools, turning and carving.
Heartwood very durable, not weather-proof.
|
| SPECIFIC
CHARACTERISTICS: |
Approx. 30 Elm kinds are known
The Elm trees are nearly becoming
extinct/died out in Europe |
