Species Properties of Black Walnut
Where it Grows
Throughout Eastern U.S., but principal commercial region is the Central states. Average tree height of 100 to 150 feet.
Main Uses
Furniture, cabinets, architectural millwork, doors, flooring, paneling, and gun stocks. A favored wood for using in contrast with lighter-colored species.
Relative Abundance
1.9 percent of total U.S. hardwoods commercially available.
Did You Know?
Walnut is one of the few American species planted as well as naturally regenerated.
General Description
The sapwood of walnut is creamy white, while the heartwood is light brown to dark chocolate brown, occasionally with a purplish cast and darker streaks. The wood develops a rich patina that grows more lustrous with age. Walnut is usually supplied steamed, to darken sapwood. The wood is generally straight-grained, but sometimes with wavy or curly grain that produces an attractive and decorative figure. This species produces a greater variety of figure types than any other.
Working Properties
Walnut works easily with hand and machine tools, and nails, screws and glues well. It holds paint and stain very well for an exceptional finish and is readily polished. It dries slowly, and care is needed to avoid kiln degrade. Walnut has good dimensional stability.
Physical Properties
Walnut is a tough hardwood of medium density, with moderate bending and crushing strengths and low stiffness. It has a good steam-bending classification.
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