American Black walnut
- Juglans nigra L.
- English: Eastern Black walnut, American Black walnut
- United States and Canada.
&;8226; Sapwood: from yellowish white to light grey.
&;8226; Heartwood: from reddish grey to dark grey.
&;8226; Fiber: straight, occasionally wavy.
&;8226; Grain: medium size.
&;8226; Interior fine furniture. Carved, turned and bent furniture.
&;8226; Hollow carpentry and paneling, interior: doors, platform, friezes, molding, stairs.
&;8226; Decorative panels.
Capacity of being impregnated
&;8226; Sapwood: capable of being impregnated.
&;8226; Heartwood: low capacity to no capacity of being impregnated.
&;8226; Sawing process: no difficulties.
&;8226; Drying process: slow. Risk of collapse and cementation.
&;8226; Planing process and other processes: no difficulties.
&;8226; Gluing process: easy.
&;8226; Nailing and screwing process: easy.
&;8226; Finish: easy
&;8226; Apparent density at 12% humidity 610 kg/m3 semi-heavy wood.
&;8226; Dimensional stability
- Volumetric contraction coefficient 0.43 % stable wood.
- Relation between contractions 1.42% no tendency to deformity.
&;8226; Hardness (Chaláis-Meudon) 3.6 semi-hardwood.
&;8226; Resistance to static flexion 1010 kg/cm2.
&;8226; Elasticity module 116,000 kg/cm2.
&;8226; Resistance to compression 523 kg/cm2.
Strong difference of colour between its very light sapwood and the dark heartwood.