African walnut

African walnut

Description

1) Golden yellow to reddish brown heartwood (Lovia trichilioiides) with darker streaks and veins. The color of the African walnut darkens with age and exposure. The sapwood is generally narrow but can be up tp 3 inches (7.5 cm) and is clearly demarcated from the heartwood. It often displays a ribbon-stripe figuring on quartersawn surfaces, similar to Sapele.

2) Another name for Tigerwood.

Synonyms and Related Terms

Lovia trichilioiides; undianuno preto (Port.); tigerwood

Physical and Chemical properties

• 1) Average Dried Weight: 34 lbs/ft3 (540 kg/m3)
• 1) Specific Gravity (Basic, 12% MC): .45, .54
• 1) Janka Hardness: 940 lbf (4,180 N)
• 1) Modulus of Rupture: 12,250 lbf/in2 (84.5 MPa)
• 1) Elastic Modulus: 1,340,000 lbf/in2 (9.24 GPa)
• 1) Crushing Strength: 6,700 lbf/in2 (46.2 MPa)
• 1) Shrinkage: Radial: 3.7%, Tangential: 5.9%, Volumetric: 10.8%, T/R Ratio: 1.6

Resources and Citations

• Wood Database: African walnut
• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 856