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North America


Tree Data
The mature tree is described as rather large. It is reported to attain a height of 70 to 90 feet (21 to 27 m), with a trunk diameter of 24 to 48 inches (60 to 120 cm).

Boles are reported to be often clear of branches to 50 to 60 feet (15 to 18 m).

Sapwood Color
The sapwood is described as whitish to yellowish brown. It is a common practice to steam or stain the sapwood to match its color with that of the heartwood.

Heartwood Color
The color of the heartwood varies from light grayish brown to deep chocolate brown to an almost black purplish brown. The appearance of the wood is usually described as warm and inviting.


The grain is slightly open and usually straight, but may be wavy or irregular. Pore arrangement is reported to be similar to that in the Hickories (Carya) and Persimmon (Diospyros virginiana ), but the pores are smaller. The wood is famous for its wavy, curly and mottled figures which are obtained from burls, crotches and stumpwood.

Texture is usually coarse, but uniform.


Wood surfaces are generally dull, but the wood is reported to develop a lustrous patina after many years in use.

The wood is tasteless but it is characterized by a mild odor when worked.

Movement in Service
Wanut is dimensionally stable after seasoning. It is reported to absorb and give off moisture more slowly than most woods, and tends to stay in place with very little movement in use.

Natural Durability
Resistance to insect and fungal attack is reported to be very good.

Veneering Qualities

American black walnut is reported to be popular for decorative veneer. The wood produces a great variety of of very unusual figures which are reported to be highly desirable in veneers. The figures include crotches, swirls, stumpwood, stripe or ribbon, mottle, snail and occasional burls.


Category Green Dry Unit
Bending Strength 9100 14800 psi
Crushing Strength (Perp.) 560 1125 psi
Max. Crushing Strength 4175 7680 psi
Static Bending (FSPL) 4400 9100 psi
Impact Strength 53 44 inches
Stiffness 1480 1790 1000 psi
Work to Maximum Load 16 14 in-lbs/in3
Hardness 1010 lbs
Shearing Strength 1370 psi
Specific Gravity 0.52 0.59
Weight 58 40 lbs/cu.ft.
Density (Air-dry) 40 lbs/cu.ft.
Radial Shrinkage (G->OD) 5 %
Tangential Shrink. (G->OD 8 %
Volumetric Shrink. (G->OD 14 %


Crown-Wood is a division of Crown-Holdings bvba, a registered company in Belgium active in the import/export & trading of all kinds of Tropical & Exotic Hardwoods (from South-East Asia, West Africa and South-America). 

Crown-Holdings bvba

Crown-Holdings bvba has the following divisions:

Contact details

a division of Crown-Holdings bvba

Baillet Latourlei 98
2930 Brasschaat

E-mail: info@crown-wood.be
Telephone: +32 3 480 10 14
Fax: +32 3 605 48 53