Telor Buaya

INTRODUCTION

The common Malaysian name for the timber of Homalium spp. (Flacourtiaceae). The ASEAN Standard Name for the timber, which is of Indonesian origin, is DELINSEM. Vernacular names applied include kayu batu (Peninsular Malaysia) and takaliu (Sabah). Major species include H. dictyoneurum, H. foetidum, H. grandiflorum and H. longifolium. The sapwood is not differentiated from the heartwood, which is reddish brown. Occasionally, a streaky corewood is produced in some trees.

Also known as Ateang and Roteang (Cambodia); Delingsem, Gia and Hia (Indonesia); Khen nang (Laos); Lance wood, Myaukchaw and Myaukugo (Myanmar); Malas (Papua New Guinea); Ampupuyot, Aranga and Aranga-babae (Philippines); and Kha nang (Thailand).


DENSITY

The timber is moderately hard to hard and moderately heavy to very heavy with a density of 720-995 kg/m3 air dry.


NATURAL DURABILITY

The timber is moderately durable.


PRESERVATIVE TREATMENT

It is easy to treat with preservatives, except for the corewood, which is not amenable.


TEXTURE

Texture is fine and even, with usually straight but sometimes interlocked grain.


STRENGTH PROPERTIES

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


MACHINING PROPERTIES

It is difficult to resaw and cross-cut. Planing is slightly difficult and the planed surface is moderately smooth.


AIR DRYING

The timber seasons fairly slowly with only slight bowing and springing as the main sources of defects. 13 mm thick boards take approximately 3 months to air dry, while 25 mm thick boards take 4 months and 38 mm thick boards take 5 months.


SHRINKAGE

Shrinkage is rather low, with radial shrinkage averaging 1.3% and tangential shrinkage averaging 1.9%.


USES

The timber is suitable for temporary heavy construction, door and window frames, flooring, furniture, turneries and wooden pallets.


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. 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.