Binuang

INTRODUCTION

The Standard Malaysian Name for the timber of Octomeles sumatrana (Datiscaceae). Vernacular name applied appears to be rather uniform in that only binuang is used throughout the country. Only one species has been recorded in the country. The sapwood is white with a greyish tinge and is moderately sharply defined from the heartwood which is buff to pale brown or sometimes pinkish brown.

Also known as Banuang, Benoea, Benuang, Binuang bini and Winuang (Indonesia); Erima, Ilimo and Irima (Papua New Guinea); and Barong, Barousan, Bilus and Binuang (Philippines).


DENSITY

The timber is soft and light and has been classified under Light Hardwood with a density of 270-465 kg/m3 air dry.


NATURAL DURABILITY

The timber is non-durable.


PRESERVATIVE TREATMENT

The timber is easy to treat with preservatives.


TEXTURE

Texture is moderately coarse to coarse, with interlocked grain.


STRENGTH PROPERTIES

The timber falls into Strength Group D (Burgess, 1958).


MACHINING PROPERTIES

It is easy to work and produces a smooth finish.


NAILING PROPERTY

Nailing property is fair.


AIR DRYING

The timber seasons slowly with severe checking, splitting and distortion as the major defects. The timber is also subject to sapstain fungal attack.


SHRINKAGE

Shrinkage is very high with radial shrinkage averages 3% while tangential shrinkage averages 7%.


USES

The timber is suitable for plywood, packing boxes and crates, concrete shuttering, match boxes, disposable chopsticks and other light and temporary works.  


REFERENCES

  1. Burgess, H.J. 1958. Strength Grouping of Malaysian Timbers. Malayan Forest Service Trade Leaflet No. 25. The Malaysian Timber Industry Board and Forest Research Institute Malaysia, Kuala Lumpur. 15 pp.
  2. Menon, P.K.B. 1986. Uses of Some Malaysian Timbers. Revised by Lim, S.C. Timber Trade Leaflet No. 31. The Malaysian Timber Industry Board and Forest Research Institute Malaysia, Kuala Lumpur. 48 pp.
  3. Wong, T.M. 1982. A Dictionary of Malaysian Timbers. Revised by Lim, S.C. & Chung R.C.K. Malayan Forest Records No. 30. Forest Research Institute Malaysia, Kuala Lumpur. 201 pp.