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Azobe (Lophira alata)
Overview
The trunk of Lophira alata is usually straight, without buttress roots, but sometimes with a swollen base, and is usually clear of branches up to about 30 metres (98 ft). The bark is typically red-brown in colour, up to two centimetres thick, and has a bright yellow layer underneath. Young trees under four metres in height have greenish-grey bark, which becomes pink or light brown as the tree matures. Inside, the living sapwood is pale pink or whitish in colour, while the inner heartwood is dark red-brown to chocolate brown, with conspicuous white deposits of silica. The leaves of L. alata are up to 25 centimetres (9.8 in) long and are tough, fairly narrow and elongated, with a rounded or slightly indented tip, and tend to occur in clusters at the ends of the twigs.
| Species | Azobe (*Lophira alata)) |
| Origin | Africa |
| Grade | AIC |
| Thickness | 18mm to 300mm |
| Width | 40mm to 300mm |
| Length | 4m to 8m |
| Drying | KD, AD |
| Prominent Uses |  |
Description & Distribution
Lophira alata, commonly known as azobé, ekki or the red ironwood tree, is a species of plant in the family Ochnaceae. It is found in Cameroon, the Republic of the Congo, the Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Ghana, Liberia, Nigeria, Sierra Leone, Sudan, and Uganda. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
The timber is extremely hard and used for railroad ties, groynes and bridge planking, as it is rot-resistant.
Physical Characteristics
Crushing Strength: 96 MPa (+/- 9)
Specific Gravity (at 12% MC): 1.06 g/cm3 (+/- 0.04)
Stability : Poorly stable
Static bending strength: 162 MPa ( +/- 21)
Durability and resistance
Dry Wood Borers : Class D - Durable
Fungi: Class 2 - Durable
Termites: Class D - Durable
Treatability: Class 4 - Not permeable
Typical Applications
● Hydraulic works (fresh water)
● Bridges (Parts in contact with water or ground)
● Vehicle or container flooring
● Heavy carpentry
● Wood frame house
● Poles
● Resistant to one or several acids
● Sleepers
● Industrial or heavy flooring
● Stairs (inside)
● Bridges (Parts not in contact with water or ground)
● Cooperage
● Stakes
● Hydraulic works (seawater)
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