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Teak

Description

General

Origin: Brazil, Thailand, Cambodja, Togo, Nigeria and Tanzania. Colour and texture: goldyellow to yellowbrown; partly dark violetbrown or black grained. Smell: in fresh state leathery. Very durable outdoors. Workability: good, but tools blunt fast; glueing is not easy; good to moderately good surface treatment possible (polishable). Lower Heating Value 18.19 MJ.

Properties

Chemical properties

Minimum value Maximum value Unit Sources
0.6 0.6 % Idemat 2003
%

Electrical properties

Minimum value Maximum value Unit Sources
kV/mm
%
V
Ohm.mm²/m

Manufacturing Properties

Minimum value Maximum value Unit Sources

Mechanical properties

Minimum value Maximum value Unit Sources
86 170 MPa Idemat 2003
48 91 MPa Idemat 2003
MPa
630 kg/m³ Idemat 2003
%
MPa
J/cm
MPa
95 155 MPa Idemat 2003
MPa
MPa
10500 15600 MPa Idemat 2003

Optical properties

Minimum value Maximum value Unit Sources

Thermal properties

Minimum value Maximum value Unit Sources
°C
°C
°C
J/kg.K
0.19 0.38 W/m.K Idemat 2003
e-6/K

Environment

3.15 mPt
0.41 Pt
243 mELU
1.74 MJ/MJ
31.8 MJ
1.79 kg
0.1 kg
In Brasil, Thailand and Cambodja, Teak is extracted from the tropical rain forest. Deforestation of tropical wood causes serious local environmental problems and is possibly related to the climate change in the world. In Africa Teak is cultivated in, what is supposed to be, a sustainable manner. The average transport to the Netherlands requires 2 * 250km (from factory to forest and back) by trailers and 9397km to the Netherlands. Chemical structure: 41.7% cellulose, 16% pentosane, 34% lignin, 1.2% acethyl, 12.6% extractives, 1.8% ash
Idemat 1998

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