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| Common
Names: |
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Brazilian
cedar
British Guiana cedar
British Honduras cedar
Cedar
Cedre rouge
Cedro
Cedro oloroso
Cedro red
Central American cedar |
Cigar
box cedar
Epi
Guyana cedar
Honduras cedar
Jamaican cedar
Kapere
Mexican cedar
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- Mechanical Values
| Category |
Green |
Dry |
Units |
| Weight |
|
30 |
lbs/cu.ft. |
| Density
(air-dry) |
|
26 |
lbs/cu.ft. |
| Specific
Gravity |
0.37 |
0.40 |
|
| Hardness |
|
568 |
lbs |
| Stiffness |
872 |
1006 |
1000
psi |
| Bending
Strength |
5234 |
8545 |
psi |
| Shearing
Strength |
|
950 |
psi |
| Max.
Crushing Strength |
2724 |
4389 |
psi |
| Work to
Maximum Load |
7 |
6 |
in-lbs/in3 |
| Radial
Shrinkage (G->OD) |
|
4 |
% |
| Tangential
Shrink. (G->OD) |
|
6 |
% |
| Volumetric
Shrink (G->OD) |
|
10 |
% |
Environmental
Profile
This species is reported to be relatively secure within
its natural growth range in most areas including French
Guina, Guyana, and Surinam, but it is classified as
either Extinct, Endangered, Vulnerable, or Rare in the
Dominican Republic and Panama, and is also reported to
be Vulnerable in Peru and Endangered in Colombia. The
environmental status of the species in the wild in the
Carribean Islands, Costa Rica, El Salvador, Guatemala,
Mexico, Nicaragua, Argentina, Bolivia, Brazil, Ecuador,
and Venezuela is currently listed as unknown because of
inadequate information (Source - World Conservation
Monitoring Center - 1992 ).
Although it may be rare in some parts of its range, the
species is reported to be rather widespread and abundant
within the remainder of its range (Source - The Nature
Conservancy - Rank of relative endangerment based
primarily on the number of occurrences of the species
worldwide ).
Distribution
C. odorata produces the famous Spanish Cedar, a timber
of great commercial interest for over 200 years. Today,
its distribution is reported to be greatly diminished
due to excessive exploitation, and large trees of good
form and size are reported to be rare.
The geographical range of the species is reported to
include the Cape Verde Islands, and although its natural
range has been obscured by exploitation, forestry
plantings, and trees which have escaped cultivation, it
has been cultivated from Sinaloa and Tamaulipas, Mexico
to Argentina and on most of the Caribbean islands. It
occurs in both dry and moist lowland deciduous forests
up to an elevation of 3900 feet (1200 m). The species is
a strong light demander and is reported to appear
frequently as a fast growing pioneer species in
secondary forests. It is often protected, and is seen
growing in cultivated fields, orchards and plantations,
and sometimes as a shade tree for coffee plants.
The species is also reported to be widely planted in
many tropical regions, including Nigeria because of its
valuable timber, rapid growth, ease of establishment in
taungya plantations, and relative freedom from
shoot-borer attack.
Product Sources
Some material from this species is reported to be
available from environmentally responsible or
sustainably managed sources.
The International Tropical Timber Organization (ITTO)
reports that the species is a very important source of
timber. The timber is reported to be exported regularly,
especially as square-edged timber and veneer.
The following species in the database is reported to be
similar to Central American cedar in color, weight, and
hardness:
Cedrillo (Huertea cubensis )
Tree Data
Cedrela trees are reported to attain heights of 100 feet
(30 m) and over, under optimum growing conditions. The
buttressed trees usually have long and clear cylindrical
boles up to 40 to 60 feet (12 to 18 m) and trunk of
diameters 36 to 72 inches (90 to 180 cm).
Sapwood Color
The sapwood is pale in color and is not sharply
demarcated from the heartwood.
Heartwood Color
The heartwood usually ranges from pale pinkish-brown to
dark reddish-brown in color, and darkens upon exposure.
Timber from younger or fast-grown trees is reported to
be generally paler in color.
Grain
The grain is straight or shallowly interlocked.
Texture
The wood has moderately coarse texture.
Luster
The wood varies from lustrous to highly lustrous.
Odor
Natural oil in the wood gives off a distinctive fragrant
scent.
Ease of Drying
The timber is reported to kiln dry fairly rapidly and
satisfactorily.
Drying Defects
The material has a tendency to distort and collapse.
Individual pieces may distort or collapse appreciably.
Knots tend to split badly, but surface-checking is
usually slight.
Kiln Schedules
T10 - D4s (4/4); T8 - D3s (8/4) US
Schedule H (4/4) United Kingdom
Gum and oil exudation in service can be controlled by
heating the timber at 200 degrees F at 60% relative
humidity for 8 to 17 hours.
Movement in Service
The timber is reported to be dimensionally stable, and
holds its shape very well after seasoning.
T/R Ratio
1.50
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 high natural resistant
to decay. The sapwood is liable to attack by powder-post
beetles. The wood is reported to be highly resistant to
termites in the West Indies, and moderately resistant in
West Africa.
Resistance to Impregnation
The heartwood is reported to be extremely resistant to
impregnation, while the sapwood is moderately resistant.
Inhibiting Volatiles
Timber produced by most species in the genus Cedrela are
reported to contain volatile oils which tend to limit
their use for certain applications, such as clock cases.
Timber from young or fast-grown trees is reported to be
generally less resinous than that from mature or more
slowly-grown trees.
Toxic Constituents
Sawdust from machining operations has been associated
with nose and throat irritation in some individuals.
Cutting Resistance
The timber responds satisfactorily to cross-cutting and
bandsawing.
Blunting Effect
The wood exerts slight blunting effect on cutters.
Planing
A good finish can be obtained in planing if cutting
angles are reduced to 20 degrees.
Turning
Turning characteristics are reported to be good.
Moulding
The wood is reported to have excellent moulding
qualities. A French head is reported to produce the most
satisfactory moulding results.
Boring
The wood is characteristically difficult to bore.
Routing & Recessing
The wood responds readily to routing.
Mortising
The wood has exceptional mortising properties.
Carving
The wood carves rather easily.
Gluing
The wood glues well, although some prior surface
preparation may be required.
Nailing
The wood has satisfactory to excellent nailing
characteristics.
Screwing
The wood has excellent screwing characteristics.
Polishing
Polishing properties are reported to be very good.
Staining
The wood has good staining characteristics.
Painting
The wood has excellent painting characteristics.
Response to Hand Tools
The wood responds well to hand tools.
Strength Properties
The bending strength of the species is considered
medium, being much weaker than White oak or Teak in the
air-dry condition (about 12 percent moisture content).
It is weak in compression parallel to grain (maximum
crushing strength), and is inferior to Mahogany.
Surfaces may dent or scratch easily since the wood is
soft. Weight and density are about average.
Strength properties are reported to be generally high,
relative to weight.
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