Species: Jelutong


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Jelutong
Species profile
The wood is cream white to light yellow. Frequent presence of large latex canals. It does not have demarcated sapwood. The grain is straight and the texture is fine. Brittleheart. Density at 12 % moisture content: 0.45 g/cm3.

The blunting effect is normal and peeling and slicing is reported to be good. The latex may clog sawteeth. Keep sharp cutting edges in order to obtain a smooth surface. Nailing is poor and gluing is correct. Jelutong dries rapid. Risks of surface checks due to latex canals. Risks of blue stain. Pocket moisture in thick material.

Jelutong is not durable to fungi and is susceptible to dry wood borers; sapwood not or slightly demarcated (risk in all the wood).

Jelutong can be used for several applications such as:
• interior: e.g. furniture, panelling, veneer, pencils, matches, sculpture, boxes and crates, moulding, joinery, sliced veneer

Can be used as substitute for Obeche (Triplochiton scleroxylon) and Poplar (Populus spp.).

References
• CIRAD Forestry Department

Family:Apocynaceae (angiosperm)
Origin:Asia and Oceania
Local and common name(s)
Djelutong, Melabuwai, Jelutong, Jelutong Paya, Andjaroetoeng, Jelutong Bukit, Letoeng,
Scientific name(s)
Dyera Costulata, Dyera Polyphylla,
Typical use
Veneer for interior of plywood, Boxes and crates, Interior joinery, Blockboard, Matches, Sliced veneer, Veneer for back or face of plywood, Moulding, Interior panelling, Pencils, Current furniture or furniture components, Sculpture,
Risk
Commercial restriction:
IUCN Red List status:
Appearance
Grain:Straight
Interlocked Grain:Absent
Sapwood:Not demarcated
Texture:Fine
Typical colour:Light Yellow
Physical description
Crushing strength:27 MPa
Specific Gravity (at 12% MC):0,45
Stability:Stable
Static bending strength:45 MPa
Durability
Dry wood borers:Class S - Susceptible - sapwood not or slightly demarcated
Fungi:Class 5 - Not durable
Termites:Class S - Susceptible
Treatability:Class 1 - Easily permeable
References
Technical descriptions from the software Tropix 7 [1], with permission of the Research Unit Biomass, Wood, Energy, Bioproducts [2], CIRAD [3].

Links
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Jelutong