Common Name(s): Avodire
Scientific Name: Turraeanthus africanus
Distribution: Western and central regions of Africa near lakes and streams
Tree Size: 80-115 ft (25-35 m) tall,
2-3ft (.6-1 m) trunk diameter
Average Dried Weight: 35.9 lbs/ft3 (575 kg/m3)
Specific Gravity (Basic, 12% MC): 0.48, 0.58
Janka Hardness: 1,170 lbf (5,180 N)
Modulus of Rupture: 15,400 lbf/in2 (106.2 MPa)
Elastic Modulus: 1,614,000 lbf/in2 (11.13 GPa)
Crushing Strength: 7,490 lbf/in2 (51.7 MPa)
Shrinkage: Radial: 4.2%, Tangential: 6.6%,
Volumetric: 11.3%, T/R Ratio: 1.6
Color/Appearance: Pale yellow or cream, darkening with age to golden yellow. Heartwood and sapwood are usually indistinguishable. Avodire can exhibit a range of grain patterns, such as wavy, mottled, and rippled, with an almost-shimmering chatoyance, making it a popular choice for veneering applications.
Grain/Texture: Grain can be straight, wavy, or irregular and interlocked. Texture is fine, with a high natural luster.
Rot Resistance: Avodire is non-durable in regards to decay resistance, and is susceptible to insect attack.
Workability: Avodire is generally regarded as having good working characteristics, and is easy to work with hand or machine tools, though wood with interlocked grain can pose a challenge with tearout while being planed. The wood also has a slight blunting effect on tool cutters. Glues and finishes well.
Odor: No characteristic odor.
Allergies/Toxicity: Although severe reactions are quite uncommon, avodire has been reported to cause skin irritation, nosebleeds, internal bleeding, and asthma-like symptoms. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.
Pricing/Availability: Avodire is commonly sold as a veneer for a moderate price, though boards are also available. Avodire lumber is likely to be in the medium price range for an imported hardwood, though veneer or solid lumber with highly figured grain is likely to be much more expensive.
Sustainability: This wood species is not listed in the CITES Appendices, but is on the IUCN Red List. It is listed as vulnerable due to a population reduction of over 30% in the past three generations, caused by a decline in its natural range, and exploitation.
Common Uses: Veneer, cabinetry, furniture, millwork, and plywood.
Comments: Similar in working properties to the true mahoganies (Swietenia genus), avodire is indeed botanically related as both are in the Meliaceae family, and it’s sometimes sold under the name white mahogany (though this name is also applied to Roseodendron donnell-smithii, as well as Eucalyptus acmenioides). Not surprisingly, the wood is dimensionally stable and, like true mahogany, has good working characteristics. Avodire also has a very good MOR-to-weight ratio, though it used more often for decorative rather than structural purposes.
In addition to the wood being marketed under the halo name mahogany, avodire has also been marketed under the commercial name African satinwood, though this vague name is more commonly used for movingui (Distemonanthus benthamianus).
Porosity: diffuse porous; growth ring boundaries indistinct
Arrangement: predominantly in radial multiples of two to three pores
Vessels: large, few; yellowish deposits sometimes present
Parenchyma: vasicentric, though parenchyma is barely visible, even under 10x magnification
Rays: narrow to medium width; normal spacing
Lookalikes/Substitutes: Figured pieces can be very similar to movingui, another African hardwood that’s used as a satinwood replacement. Movingui’s color tends to be more golden yellow compared to avodire’s paler straw-like hue. (If solid wood, movingui is markedly heavier and also has much more extensive aliform and confluent parenchyma.)
Idigbo is another African hardwood with similar appearance and weight. Idigbo tends to have larger pores, giving it a more porous and grainy texture on the facegrain. Additionally, idigbo can have decreased pore frequency at its growth ring margins, while avodire’s pores are much more evenly and consistently spaced.
Notes: Heartwood will sometimes fluoresce a faint yellowish green under blacklight.