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Black Walnut

Juglans nigra

Also known as: American Walnut, Eastern Black Walnut

Technical Spec Sheet

2026-07-14

Black Walnut wood grain

Reference grain swatch

Janka Hardness
1,010 lbf (4,493 N)
Avg. Dried Weight
610 kg/m³ (38 lb/ft³)
Specific Gravity
0.55
Type
Hardwood
Grain
Usually straight, occasionally wavy
Texture
Medium to coarse
Durability
Very durable, resistant to decay
Region
North America
Sustainability
Sustainable — Sustainable with proper forest management

Overview

Black Walnut is one of the most prized North American hardwoods, renowned for its rich dark color and excellent working properties. It has been a favorite of furniture makers and craftsmen for centuries due to its beauty, strength, and durability.

The heartwood ranges from light to rich dark chocolate brown, sometimes with purplish tones. Sapwood is pale yellow-gray and clearly demarcated. Density of approximately 610 kg/m³ when dried, with a Janka hardness of 1,010 lbf. The wood is moderately stable in service.

Workshop Notes

Blunting Effect

Low to moderate - generally kind to cutting edges

Gluing

Good gluing properties with most adhesives

Finishing

Excellent - takes finishes beautifully, especially oil-based products

Steam Bending

Good steam bending characteristics

Scent

Mild, pleasant aroma when worked

Assessment

Strengths

  • Excellent shock resistance
  • Good stability
  • Beautiful appearance
  • Naturally resistant to decay

Weaknesses

  • Can be expensive
  • Sapwood susceptible to insect attack
  • Limited availability of large boards

Common Uses

Fine furniture · Cabinetry · Gunstocks · Musical instruments · Veneer · Turned objects