The sapwood of black walnut is nearly white, while the heartwood is light brown to dark, chocolate brown, often with a purplish cast and darker streaks. The wood is heavy, hard, and stiff and has high shock resistance.
Sizes Available:
4/4, 5/4, 6/4, 8/4
Mechanical Properties:
Janka side hardness is about 1,010 lb. for dry material. Shrinkage green to ovendry: radial 5.5%, tangential 7.8%, volumetric 12.8%.
Working Properties:
It is straight grained and easily worked with hand tools and by machine. It finishes beautifully and holds paint and stain exceptionally well. It also glues and polishes well.
Durability:
Rated as very resistant to heartwood decay–one of the most durable woods, even under conditions favorable to decay.
