DARINA
 Other Common Names: Erejoeroe, Lialiadan koleroe, Saandoe (Surinam), Angelim do Para, Caramate, Sapupira amarella (Brazil).
 
Distribution:Upland forests of the central and eastern parts of the Brazilian Amazon region and extending northward into the Guianas and southward to Rio de Janeiro.
 
The Tree: A medium-sized to very large tree, sometimes 150 ft in height with diameters to 10 ft.
 
The Wood:
General Characteristics: Heartwood when fresh is light orange tan to orange brown turning to pale brown on exposure with a rather gradual transition to the white or grayish sapwood. Texture rather coarse and uneven; luster rather low; grain straight to interlocked; without distinctive odor or taste. Alternating zones of dark and light tissue give a figure of the Partridge wood type.
 
Weight: Basic specific gravity (ovendry weight/green volume) 0.6; air-dry density 47 pcf.
 
Mechanical Properties: (First set of data based on 2-in. standard; second set on the 1-in. standard.) 

Moisture content   Bending strength   Modulus of elasticity   Maximum crushing strength

(%)                                   (Psi)                      (1,000 Psi)                   (Psi)
Green (73)                   14,610                        1,950                          7,460
12%                            17,610                        2,050                          8,990 
12% (24)                     13,300                        2,000                          9,050
 
Janka side hardness 1,720 lb for both dry and green material. Forest Products Laboratory toughness average for green and dry material is 203 in.-lb. (5/8-in. specimen).

 

Drying and Shrinkage: Reported to be moderately difficult to air-dry season. Rated drying fast to moderate with moderate warp and slight surface and end checking. No data on kiln schedules available. Shrinkage green to ovendry: radial 4.4%; tangential 7.1%; volumetric 10.2%.
 
Working Properties: The wood is easy to work in all operations and machines to a smooth surface.
 
Durability: In laboratory tests heartwood was rated very durable upon exposure to white-rot and durable in resistance to a brown-rot fungus. Exposure tests indicate the heartwood is only moderately resistant to marine borers.
 
Preservation: Heartwood and sapwood are both reported to respond well to pressure-vacuum treatments; test specimens, however, had high end-grain exposure.
 
Uses: Heavy construction, turnery, and furniture.

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