Walnut (American Black) Wood Flooring

Juglans nigra

Sample is 3/4-by-2-1/4-inch square-edge solid strip.
Top portion is finished with water-base urethane;
bottom with oil-modified polyurethane.

Appearance

Color: Heartwood ranges from a deep, rich dark brown to a purplish black. Sapwood is nearly white to tan. Difference between heartwood and sapwood color is great; some flooring manufacturers steam lumber to bleed the darker heartwood color into the sapwood, resu
Grain: Mostly straight and open, but some boards have burled or curly grain. Arrangements of pores is similar to hickories and persimmon, but pores are smaller in size.
Variations Within Species And Grades: Great variety of color and figure within species, as well as variation in color among boards, especially in lower grades and from material that isn't steamed prior to kiln-drying.
 

Properties

Hardness/Janka: 1010; 22% softer than Northern red oak.
Dimensional Stability: Excellent (change coefficient .00274; 26% more stable than red oak).

Durability: Moderately dense, very strong, good shock resistance. Not as dent-resistant as oak.
 

Workability

Sawing/Machining: Easily worked with hand tools, and has excellent machining qualities.
Sanding: Sands satisfactorily.

Nailing: Fair resistance to splitting; good holding ability.
Finishing: Finishes nicely, with a handsome grain pattern.

Comments: Distinctive sweet aroma when worked. Frequently used as a highlight material for borders or other inlay techniques.
 

Cost

(relative to plainsawn select red oak)
Multiplier: 3.00
 

Availability

Moderately available, normally in unfinished parquet, strip and in various plank widths as a special order. Available in fancy parquet patterns as a special order or custom mill.