The Standard Malaysian Name for the timber of Potoxylon melagangai (syn.: Eusideroxylon melagangai; Lauraceae). Vernacular names applied include belian kapok (Sarawak), belian kebuau (Sarawak) and belian malagangai (Sarawak). The sapwood is yellowish when fresh and sharply differentiated from the heartwood, which is brown with a distinct reddish tinge.
Also known as Malagangai (Brunei).
The timber is moderately hard and strong with a density of 525-920 kg/m3 air dry. The timber is classified under Heavy Hardwood in Malaysia.
The timber is very durable.
It is difficult to treat with preservatives.
Texture is moderately fine and even, with fairly straight grain.
The timber falls into Strength Group A (Burgess, 1958).
The timber is reported to saw easily.
The timber seasons fairly easily.
Shrinkage is high. Radial shrinkage averages 2.4% while tangential shrinkage averages 4.4%.
The timber is used for heavy construction, railway sleepers, mallets, boat building, posts, paddles, fences, pepper posts and shingles.
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.
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.
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.