NYATOH BATU
Botanical Name: Palaquium spp. & Payena spp.
Nyatoh, Nyatoh Batu

Nyatoh is a medium to large hardwood generally occurring throughout South East Asia and the Philippines although some sub species come from as far apart as India and the western Pacific Islands.

The most recognized material is from the Palaquium spp. which are the lower density varieties that grow to a height of about 30 metres and usually occur in podsol soils or peat swamps with some also in mixed forest areas.

  • Density(average)
  • 660kg/m3 green
  • Durability Class 3
  • Hardness Rating (average)
  • S4 green
  • SD4 dry
  • 3.1kN green
  • 3.8kN dry
 
The timber of the Palaquium spp. is normally easy to work although silica in the heavier species may cause some difficulty and because of this range of species care needs to be taken when drying to avoid end splitting. It nails well and takes glue but sometimes exhibits burn marks when being turned or sanded and so care is recommended.

Heartwood is purple-pink to red-brown with the sapwood much lighter usually quite wide and very easy to distinguish and although susceptible to lyctid borer it is rarely attacked.

The texture is medium to coarse and even with the grain straight or wavy and sometimes

slightly interlocked. When freshly cut the timber normally has an unpleasant smell often referred to as sour, the dust is regarded as being highly irritant, causing rashes and throat and nasal problems. Safety clothing and face masks should be worn at all times when being worked.

Nyatoh has been widely used in Australia for many years, predominately as interior joinery, furniture, plywood and some craft applications