Species: Haldu


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Haldu
Species profile
The wood is yellow darkening to yellow brown with age. Lustrous surface. It does not have clearly demarcated sapwood. Very wide sapwood. The grain is straight and the texture is fine. Density at 12 % moisture content: 0.70 g/cm3.

The blunting effect is normal and peeling and slicing is reported to be good. Sometimes irritant sawdust. Nailing is good and gluing is correct. Haldu dries normal. Some tendency to split during air drying.

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

Haldu can be used for several applications:
• interior: e.g. furniture, stairs, panelling, flooring, veneer, boxes and crates, pencils, joinery, sliced veneer, cigar boxes, light carpentry

References
• CIRAD Forestry Department

Family:RUBIACEAE (angiosperm)
Origin:Asia and Oceania
Local and common name(s)
Haldu, Kwao, Lasi, Hnaw, Kolon, Gao-vang, Meraga, Adina,
Scientific name(s)
Haldina Cordifolia, Adina Cordifolia (synonymous),
Typical use
Interior joinery, Flooring, Sliced veneer, Veneer for back or face of plywood, Turned goods, Pencils, Cigar boxes, Glued laminated, Stairs (inside), Interior panelling, Veneer for interior of plywood, Cooperage, Current furniture or furniture components, Boxes and crates, Light carpentry, Resistant to one or several acids,
Risk
Commercial restriction:No commercial restriction
IUCN Red List status:
Appearance
Grain:Straight
Interlocked Grain:Absent
Sapwood:Not clearly demarcated
Texture:Fine
Typical colour:Yellow
Physical description
Crushing strength:55 MPa
Specific Gravity (at 12% MC):0,70
Stability:Moderately stable
Static bending strength:90 MPa
Durability
Dry wood borers:Class S - Susceptible - sapwood not or slightly demarcated
Fungi:Class 3 - Moderately durable
Termites:No information available
Treatability:Class 4 - Not permeable
References
Technical descriptions from the software Tropix 7 [1], with permission of the Research Unit Biomass, Wood, Energy, Bioproducts [2], CIRAD [3].

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