USDA Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53705-2398
Wood Technical Fact Sheet
Other Common Names: Anacag_ita (Puerto Rico), Bellota, Chiapas (Mexico), Panama (Panama), Sunsun (Venezuela), Camajuru (Colombia).
Distribution: Southern Mexico and Central America to Peru and Brazil. Widely planted elsewhere in the tropics as a shade tree, for the edible seeds, and as a honey plant.
The Tree: May reach a height of 130 ft and a trunk diameter of 80 in.; develops prominent, narrow buttresses.
General Characteristics: Heartwood light brown, reddish brown, or yellowish brown, not sharply demarcated from the yellowish sapwood. Luster medium; texture medium; grain straight to irregular; without distinctive odor or taste.
Weight: Basic specific gravity (ovendry weight/green volume) 0.33; air-dry density 25 pcf.
Mechanical Properties: (First two sets of data based on the 2-in. standard, the third on the 1-in. standard.)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
Green (75) 4,460 980 2,140
12% 7,110 960 4,230
12% (44) 4,900 965 NA
12% (24) 5,900 NA 3,680
Janka side hardness at 12% moisture content ranges from 270 to 530 lb. Forest Products Laboratory toughness average for green and dry material 48 in.-lb. (5/8-in. specimen).
Drying and Shrinkage: Reported to air-dry well if dried slowly; prone to collapse. No data available on kiln schedules. Shrinkage green to ovendry radial 3.7%; tangential 8.3%; volumetric 11.8%.
Working Properties: Generally reported to be easy to work with both hand and machine tools; timber from Panama showed considerable fuzzy grain after planing.
Durability: No resistance to attack by decay fungi or insects, also prone to blue stain.
Preservation: One report describes this wood as very easy to treat obtaining high absorption and deep and uniform penetration, another rates this wood as moderately difficult.
Uses: Boxes and crates, interior construction, plywood, particleboard, millwork.
Additional Reading: (24), (44), (75)