Black Walnut
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Juglans
nigra. Black
Walnut is one of
America's most
widely known and
most valuable
species. The
wood is
moderately
heavy, hard, and
strong. The
heartwood color
ranges from
light brown to
chocolate brown
-- sometimes
with purplish
overtones; the
sapwood is light
brown, and often
steam treated in
order to reduce
the contrast.
Black Walnut
grows throughout
the eastern
United States,
but in
relatively low
quantities. The
wood works
easily, stains
and finishes
extremely well
and is often
used in
furniture and
for
architectural
products which
highlight its
particular grain
pattern, color,
and texture.
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USES
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AVAILABILITY
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PRICE
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Furniture,
cabinets,
architectural
panels, doors,
floors, gun
stocks,
woodenware.
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Generally
available 4/4
through 8/4
thickness,
limited
availability
10/4 and
thicker.
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Valuable.
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Relative Working
Properties
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Machining
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 Resistance
to
Splitting in
Nailing
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 Resistance
to
Splitting in
Screwing
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Gluing
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Excellent
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Fair
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Good
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Good
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Physical Properties
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Specific Gravity
(12% M.C.)
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Average Shipping
Weight kilograms
(kg) per cubic
metre (m3)
Air Dry
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Average
Volumetric
Shrinkage (oven
dry % of Green)
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Modulus of
Rupture
(Kilopascals)
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Modulus of
Elasticity (Megapascals)
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Side Hardness (Newtons)
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0.55
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579
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12.8
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101,000
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11,600
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4,500
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