Walnut
Juglans nigra

Colour
Sapwood is pale to whitish brown. Heartwood is medium to chocolate brown.

Texture
Close textured, diffuse pores.

Common applications
High-end furniture, flooring, mouldings, caskets, millwork.

Classification
Select & Better
#1 Common

Standard dimensions available
Dimensions Unfinished Prefinished
Thickness in. (mm) 25/32" (19,8 mm)
33/32" (26,2 mm)
3/4" (19 mm)
 Width in. (mm) 1 ½" (38,10 mm)
1 ¾" (44,45 mm)
2" (50,80 mm)
2 ¼" (57,15 mm)
2 ½" (63,50 mm)
3 ¼" (82,55 mm)
2 ¼" (57,15 mm)
2 ½" (63,50 mm)
3 ¼" (82,55 mm)

Standard industry grade
Unfinished Prefinished
Clear Select & better
Select & better #1 Common
#1 Common  
#2 Common  

Types of finish available
High gloss Semi-gloss Matte
> 75% gloss 50 à 75% gloss < 50% gloss

Specifications
CLEAR
SELECT & BETTER
  • Best appearance.
  • Selected for uniformity of light color.
  • Slight variation in the natural sapwood color (sticker stain is not considered a defect).
  • Limited small character marks.
  • Pin knots allowed.
  • Mineral streaks of less than 1/8" x 1" (3 x 25 mm).
  • No checks or splits.
  • Minimum length: 12" (30 cm)
  • Combination of clear and select grades.
  • The most standard high grade hardwood flooring sold on the world market.
  • Excellent appearance.
  • Variation in the natural sapwood color (sticker stain is not considered a defect).
  • Limited character marks.
  • Sound knots of less than 1/8" x 4" (3 x 100 mm).
  • No stains, checks, or splits.
  • Minimum length: 12" (30 cm).
#1 COMMON
#2 COMMON
  • Variegated appearance.
  • All color variations allowed.
  • Sound knots less than 3/8" (10 mm), flags, worm holes, and mineral streaks allowed.
  • No splits, holes, or voids.
  • Minimum length: 10" (25 cm).
  • Rustic appearance.
  • All color variations allowed.
  • All characteristics of the species allowed.
  • A serviceable floor after knot holes, worm holes, checks, splits, and other imperfections are filled and finished.
  • Minimum length: 10" (25 cm)
Standard grading allowance: maximum of 5% below the actual grade. Also available in combination of grades.

Physical Properties
Hard
Maple
Yellow
Birch
Red
Oak
White
Ash
Beech
Cherry
Walnut
Specific Gravity
0,659
0,608
0,612
0,613
0,667
0,551
0,594
Density kg/m3
740
670
690
690
750
610
660
Hardness
7290
5930
6170
7050
6490
4630
5910
Bending Strenght (MP)
115
106
98,7
108
116
87,1
103
Stiffness (MP)
14100
14100
11900
12800
14000
11900
13100

Working Properties
Hard Maple
Yellow Birch
Red
Oak
White Ash
Beech
Cherry
Walnut
 Machinability
Excellent
Excellent
Excellent
Very good
Good
Excellent
Good
 Stability
Good
Good
Very good
Very good
Good
Good
Excellent
 Gluing
Good
Good
Good
Good
Very good
Very good
Excellent
 Sandablity
Very good
Good
Good
Fair
Very good
Excellent
Very good
 Nailability
Good
Good
Excellent
Good
Fair
Fair
Fair
 Paintability
Good
Good
Good
Excellent
Good
Good
Good
 Stainability
Good
Very good
Good
Good
Good
Very good
Good