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Also called “Brazilian Walnut” is best known for its incredible hardness. It is almost 3 times the hardness of Red Oak. It has a coloration similar to American Walnut with a greenish hue.

Description:

Heartwood olive brown to blackish, often with lighter or darker striping, often covered with a yellow powder; sharply demarcated from the whitish or yellowish sapwood. Texture fine to medium; luster low to medium; grain straight to very irregular; rather oily looking; without distinctive odor or taste.

Mechanical Properties:

Janka side hardness is about 3,680 for lb. for dry material. Shrinkage green to ovendry: radial 6.6%, tangential 8.0%, volumetric 8.0%.

Working Properties:

Moderately difficult to work especially with hand tools; has a blunting effect on cutting edges, finishes smoothly except where grain is very roey The fine yellow dust produced in most operations may cause dermatitis in some workers.

Durability:

Heartwood is very resistant to attack by decay fungi and termites; not resistant to marine borers. T. guayacan however, is reported to have good resistance in Panama waters.

Uses:

Railroad crossties, heavy construction, tool handles, turnery, industrial flooring, textile mill items, decorative veneers.