Technical Information
Basic
Resource
The
raw source material for Tangaloa Prime hardwood
is the common coconut tree (cocos nucifera), also
referred to by Tangaloa as coco timber trees. In
the field, strict proprietary specifications are
applied to grade a Tangaloa
coco timber tree. After
logging, proprietary milling technology and other
processes transform the log into Tangaloa Prime
hardwood.
Biology
A
monocotyledon (monocot), a Tangaloa coco timber
tree is not organized with separate sapwood and
heartwood perimeters, as is present in
dicotyledon (dicot) trees. Rather, it has the
equivalent of vascular bundles that are spread
throughout the cellulose structure of the tree
and continuous and contiguous for the length of
the tree. Non-branching, the tree is naturally
free of all knots. Extremely high in fiber
content, only trees that are non-productive and
senile are logged. At this stage, the primary,
secondary and tertiary fibers are at its most
mature and highest densities.
The
primary vascular bundle of the coco timber tree
is located at the outer perimeter of the trunk
and gives the tree its high strength and
elasticity. Thus, the hardest wood of the tree is
milled from the outer boundaries, with the wood
getting relatively less hard towards the center.
Tangaloa
grades all of its wood as FAF prime, as all faces
are 100% clear and knot-free. It has a very high
vascular fiber content and clear grain patterns.
The wood is naturally free of all knots. Visual
examinations easily discern the hardest wood by
its dense vascular fiber content and dark tones
from the less hard wood and lighter tones. Degrees
of hardness are relative, as all Tangaloa wood is
hard.
Density
and Hardness
Tangaloa
Prime hardwood has two degrees of density and
hardness and is graded according to the following
parameters:
- High-density timber
- hard: 600-800kg/m3
; avg. 4lbs/bf;
- Medium density
timber med. hard: 400-600kg/m3
; avg. 3lbs/bf.
Color
Tones
Color
tones and hues range from golden to near ebony.
There are three basic color divisions that relate
to vascular density: dark
tones, highest density; medium
dark or transitional tones between dark and light,
medium density; and blonde or
golden tones, lightest
density.
Standard
Mill Cuts
- Thickness 1/4
inch to 2 inches
- Width up to 6
inches
- Length up to 10
feet
Mechanical
Properties
Static Bending:
- Stress at
proportional limit 310kg sq/cm
- Modulus of
rupture 527kg sq/cm
- Modulus of
elasticity 73,000kg sq/cm
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Compression
Parallel to Grain
- Stress at
proportional limit 169kg sq/cm
- Maximum
crushing strength 527kg sq/cm
- Modulus of
elasticity 109,000kg sq/cm
|
Hardness Test
- Load required
to embed a 1.128 steel ball to
1/2 its diameter
- Side 524kg
- End 488kg
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* All tests conducted followed
the procedures of the ASTM Standard Methods of
Testing Small clear specimens of Timber ASTM
Designation: D143-52.
Comparison
with Philippine Mahogany
The
strength properties of Tangaloa Prime hardwood
exceed those of the tiaong mahogany (shorea
aquaboensis), except for the modus of elasticity,
which are approximately 90% of tiaong.
Termite
Testing
Five
test stations were maintained for nine months in
known termite-infested area. At the end of the
nine months, examination of all thirty wood
samples showed no intrusion of termites. Tangaloa
makes no claims as to the degree of termite
resistance of its wood.
Water Soak Expansion Test
- Four
1/4"x4x48" blanks (uncoated)
soaked in water for 24 hours:
- Result: 1.54-3%
expansion. Returned to original
dimensions after natural drying.
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