Teak
Botanical name
Tectona grandis
Origin
Asia
Other names
Notes
WOOD DESCRIPTION
| Color: |
yellow brown |
| Sapwood: |
clearly demarcated |
| Texture: |
coarse |
| Grain: |
straight |
| Interlocked grain: |
absent |
| Note: |
The wood darkens and presents golden glints with age. Sometimes black brown veins. Oily to the touch. |
PHYSICAL, MECHANICAL AND ACOUSTIC PROPERTIES
|
(*: at 12% moisture content, with 1 MPa = 1 N/mm²) Musical quality factor: 128,2 measured at 2656 Hz |
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NATURAL DURABILITY AND TREATABILITY
| Funghi (according to E.N. standards): |
class 1 - very durable |
| Dry wood borers: |
durable - sapwood demarcated (risk limited to sapwood) |
| Termites (according to E.N. standards): |
class M - moderately durable |
| Treatability (according to E.N. standards): |
class 4 - not permeable |
| Use class ensured by natural durability: |
class 4 - in ground or fresh water contact |
| Species covering the use class 5: |
Yes |
| Note: |
The durability of teak wood from plantation is much lower than that of the teak from natural forest. It is moderately resistant to fungi and classified as sensible to durable against termites. This species is listed in the standard NF EN 350-2 which makes a difference between the Teak from Asia (meaning natural forest) and the teak planted in Asia and other countries; the first one is classified in the natural durability class 1 towards fungi and in natural durability class M towards termites; the second is in the natural durability class 1-3 towards fungi and in natural durability class M-S towards termites. The use class mentioned in Tropix is given for teak from natural forest. According to the European standard NF EN 335, performance length might be modified by the intensity of end-use exposition. This species naturally covers the use class 5 (end-uses in marine environment or in brackish water) due to its high silica content. |
SAWING, MACHINING AND ASSEMBLING
| Blunting effect: |
high |
| Sawteeth recommended: |
stellite-tipped |
| Cutting tools: |
tungsten carbide |
| Peeling: |
not recommended or without interest |
| Slicing: |
nood |
| Note: | Variable silica content. Sawdust may cause skin irritations. |
| Nailing / screwing: |
good but pre-boring necessary |
| Gluing: |
correct |
| Note: |
Pre-boring recommended due to a slight tendency to split when nailing. Satisfactory gluing on surfaces freshly machined or sanded (the wood contains oleoresins). |
