Walnut: (Juglans nigra) Ratings 1 to 5 (best):
4/4 through 8/4 F1F & Btr
4/4 10" & Wider F1F & Btr
Throughout Eastern U. S., but principal commercial region is the Central States. One of the few American species planted as well as naturally regenerated.
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. 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.
Reasonable availability with regional limitations.
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. It dries slowly, and care is needed to avoid kiln degrade. Walnut has good dimensional stability.
Walnut is a tough hardwood of medium density, with moderate bending and crushing strengths and low stiffness. It has a good steam-bending classification.
Furniture, cabinets, architectural millwork, doors, flooring, paneling, and gun stocks. A favored wood for using in contrast with lighter-colored species.