Kayu Masam

INTRODUCTION

The common Malaysian name, which is of Sarawakian origin, for the trees and timber of Aporosa spp. (Euphorbiaceae). Vernacular names applied include bagil (Sabah), galang-galang (Sabah), penatan (Sabah) and sebasah (Peninsular Malaysia). Major species include A. arborea, A. aurea, A. benthamiana, A. bracteosa, A. dioica, A. elmeri, A. frutescens, A. grandistipulata, A. nervosa, A. nigricans, A. nitida, A. prainiana and A. stellifera. The sapwood is not differentiated from the heartwood, which is light yellow-brown, yellow-brown or brown with orange or purple-red tinge.

Also known as Sasah (Indonesia); Malabignai (Philippines); and Mueat (Thailand).


DENSITY

The timber is moderately hard and moderately heavy with a density of 570-890 kg/m3 air dry.


NATURAL DURABILITY

The timber is expected to be moderately durable.


TEXTURE

Texture is moderately fine but uneven, due to the presence of broad rays. Grain is straight.


MACHINING PROPERTIES

The timber is reputed to be fairly easy to work as it is non-siliceous.


AIR DRYING

It is reported to season without serious defects.


USES

The timber has been used for rafters, household implements, tool handles, flooring and furniture.


REFERENCE

  1. Wong, T. M. 1982. A Dictionary of Malaysian Timbers. Revised by Lim, S. C. & Chung, R. C. K. Malayan Forest Record No. 30. Forest Research Institute Malaysia Kuala Lumpur. 201 pp.