USDA Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53705-2398
Wood Technical Fact Sheet
Other Common Names: Gnulgu, Muermo, Roble de Chile, Ulmo (Chile).
Distribution: Occurs in Chile between 37 and 44 S. latitude, extending up the mountains to the edge of glaciers.
The Tree: May reach a height of 130 ft and trunk diameters to 24 in.
General Characteristics: Heartwood reddish- or grayish brown, sometimes variegated; not sharply demarcated from the lighter colored sapwood. Luster rather high; texture not sharply demarcated from the lighter colored sapwood. Luster rather high; texture fine and uniform; grain generally straight; without distinctive odor or taste.
Weight: Basic specific gravity (ovendry weight/green volume) 0.48; air-dry density 38 pcf.
Mechanical Properties: (2-in. standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
Green (13) 7,000 1,130 3,770
12% 11,000 1,420 6,500
Drying and Shrinkage: The wood is rather difficult to season and is prone to severe surface and end checking. Kiln schedule T3-C2 is suggested for 4/4 stock and T3-C1 for 8/4. Shrinkage green to ovendry: radial 4.5%; tangential 8.2%; volumetric 13.2%.
Working Properties: Reported to have good working properties.
Durability: Heartwood is nondurable.
Preservation: The wood responds well to preservation treatments with good lateral penetration. Sapwood and heartwood are equally treatable.
Uses: Railroad crossties (treated), flooring, general construction, furniture, and joinery.
Additional Reading: (13), (59), (77)