|
|
| Common
Names: |
|
Anegre
Aniegre
Aningeria
Aningeria blanc
Aningre
Kali
Kararo
Landojan
Landosan |
M'boul
Mukali
Mukangu
Muna
N'kali
Osan
Tanganyika nuss
Tutu |
|
|
|
|
- Mechanical Values
| Category |
Green |
Dry |
Units |
| Weight |
55 |
35 |
lbs/cu.ft. |
| Density (air-dry) |
|
35 |
lbs/cu.ft. |
| Specific Gravity |
0.44 |
0.54 |
|
| Hardness |
|
995 |
lbs |
| Stiffness |
1100 |
1430 |
1000 psi |
| Bending Strength |
7930 |
11743 |
psi |
| Shearing Strength |
|
|
|
| Max. Crushing Strength |
4250 |
6487 |
psi |
| Work to Maximum Load |
|
|
|
| Radial Shrinkage (G->OD) |
|
4 |
% |
| Tangential Shrink. (G->OD) |
|
7 |
% |
| Volumetric Shrink (G->OD) |
|
12 |
% |
Environmental Profile
This species is officially classified as Rare within its
natural growth range in Ghana, and Vulnerable in the Ivory
Coast. Its status is listed as unknown in Congo, Ethiopia,
Guinea, Ivory Coast, Sierra Leone, and Sudan because of
inadequate information (Source - World Conservation Monitoring
Center - 1992 ).
Distribution
The species is reported to occur from Guinea to Ethiopia,
and is also found in Zambia and Gabon.
Product
Sources
Some material from this species is reported to be available
from sustainably managed or other environmentally responsible
sources.
The
International Tropical Timber Organization (ITTO) reports
that timber production from this species is in low quantities.
Exports are more or less regular. Exportation of the
timber from Cameroon is prohibited by local laws.
Tree
Data
Anegre trees are reported to attain a height of up to
180 feet (54 m), with clear, cylindrical boles that
may be 85 feet (24 m) long. Trunk diameters are reported
to be 36 to 48 inches (90 to 120 cm).
Sapwood
Color
The sapwood is pale pink to reddish-brown in color,
and not sharply demarcated from the heartwood.
Heartwood
Color
The heartwood is pale pink to reddish-brown in color,
darkening slightly upon exposure. It is not sharply
demarcated from the sapwood. The timber is reported
to resemble Birch (Betula ) in appearance.
Grain
The grain is usually straight but sometimes wavy.
The timber is reported to be occasionally figured with
heavy fiddleback, a broken mottled figure, or a bee's
wing.
Texture
Lighter grade material is medium to coarse textured
while heavier grade material is usually fine textured.
Luster
The wood is lustrous.
Odor
The wood has an odor similar to that of cedar, but there
is no distinctive taste.
Ease
of Drying
The timber is reported to dry well and rapidly, with
little degrade, but rapid extraction, conversion and
drying is recommended after harvesting.
Drying
Defects
The wood is reported to season without checking or twisting,
but it is prone to blue stain during the initial stages
of drying.
Kiln
Schedules
T6 - D4 (4/4); T3 - D1 (8/4) US
Schedule E; United Kingdom
Movement
in Service
The timber is reported to be dimensionally stable, and
retains its shape well after seasoning.
T/R
Ratio
1.75
This indicator is more meaningful if it is used together
with actual shrinkage data in the tangential and radial
directions. (Refer to the Numerical Values window).
Natural
Durability
The heartwood is reported to have very little resistance
to decay, and is vulnerable to attack by fungi and termites.
Resistance
to Impregnation
The heartwood is reported to be permeable to preservative
treatment.
Silica
Content
The timber is sometimes siliceous.
Cutting
Resistance
The timber is reported to respond readily to sawing.
Blunting
Effect
Some material may contain silica which can blunt cutting
edges rapidly and severely.
Planing
The wood is reported to be rather difficult to plane
to a smooth finish.
Boring
Adequate support is necessary when boring to prevent
chipping.
Mortising
The timber should be supported during mortising to prevent
break out.
Gluing
Gluing properties are reported to be good.
Nailing
The wood is reported to have good nail-holding properties.
Screwing
The wood has good screwing properties.
Polishing
The wood is reported to have good finishing and polishing
characteristics.
Staining
This species has good staining properties.
Steam
Bending
The timber is reported to possess medium steam bending
properties.
Response
to Hand Tools
The wood is reported to respond well to hand tools but
has moderate blunting on cutting edges.
Strength
Properties
The species has high bending strength in the air-dry
condition (about 12 percent moisture content). It compares
favorably with Teak, which also has high bending strength.
Its strength in compression parallel to grain is medium,
but ower than that of Teak. Hardness is rated as medium.
It resists denting and marring about as well as white
oak or birch. The weight is medium. The wood has high
density.
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