Nyatoh Kuning

INTRODUCTION

The Standard Malaysian Name for the timber of Pouteria spp. (Sapotaceae). Vernacular names applied include menasi (Peninsular Malaysia), misi (Peninsular Malaysia), nangka-nangka (Peninsular Malaysia), nyatoh laut (Sabah), nyatoh nangka (Peninsular Malaysia) with various epithets and umas-umas (Sabah). In Sabah and Sarawak, this timber is mixed with other members of Sapotaceae and sold as NYATOH. Major species include P. maingayi and P. malaccensis. The sapwood is not differentiated from the heartwood, which is creamy white to light yellow.

Also known as Northern yellow boxwood (Australia); Sarosaro and Tadiri (Fiji); Lambapatti (India); Nyatuh (Indonesia); Thitcho (Myanmar); Pencil cedar, Planchonella and Silk wood (Papua New Guinea); White Nato (Philippines); and Keta, Sesele and Verure (Soloman Islands).


DENSITY

The timber is moderately hard to hard and is moderately heavy to heavy with a density of 690-880 kg/m3 air dry.


NATURAL DURABILITY

The timber is non-durable under exposed conditions.


TEXTURE

Texture is moderately fine and even, with straight to shallowly interlocked grain.


STRENGTH PROPERTIES

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


MACHINING PROPERTIES

It is moderately easy to saw and is easy to work. The timber produces a smooth planed surface.


AIR DRYING

It seasons slowly with only some staining as the main source of degrade. 25 mm thick boards take 5 to 6 months to air dry.


SHRINKAGE

Shrinkage is very high, with radial shrinkage averaging 2.3% and tangential shrinkage averaging 4.3%.


USES

The timber is suitable for medium construction under cover, interior finishing, panelling, partitioning, railings, shelves, mouldings, joinery, cabinet making, door and window frames and sills, staircase (balustrade, carriage, handrail, riser, stringer, tread, bullnose, round end and winder), plywood and furniture.


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.