Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Straight grain with visible semi-ring-porous structure and moderate open pores. The sample shows a flat-sawn appearance with subtle cathedral peaks and minor grain irregularities.
Color Description
Heartwood is a rich chocolate brown with lighter tan highlights and darker brown streaks. Shows a moderate natural luster and typical golden-brown aging characteristics under UV exposure.
Hardness Rating
1010 lbf (Medium Hardness)
Durability Rating
Durable to Very Durable regarding decay resistance; susceptible to insect attack.
Common Uses
Fine furniture, cabinetry, flooring, interior trim, gunstocks, veneer, and turned objects.
Geographic Origin
Eastern North America
Market Value & Sustainability
Estimated Market Value
$10.00 – $15.00 per board foot depending on grade and width.
Wood Age Estimate
Modern processing (5-20 years); the surface shows a contemporary film finish with minimal oxidation or wear patterns.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List of Threatened Species; widely available as FSC-certified.
Workability
Generally easy to work with both hand and machine tools. It planes well, though tearout can occur in figured areas. Glues, stains, and finishes exceptionally well.
Notable Features
Distinctive mild, spicy odor when being worked. Known for its excellent dimensional stability and shock resistance.
Finish Recommendations
Penetrating oils or wiping varnishes represent the species best. Polyurethane or lacquer can be used for extra protection but can sometimes look plastic-like on walnut's open grain.
Identification Confidence
High; the characteristic chocolate-brown color, distinct pore structure, and grain transitions are classic indicators of North American Black Walnut.