The Standard Malaysian Name as well as the ASEAN Standard Name for the timber of Sterculia spp. (Sterculiaceae). Vernacular names applied include kelumpang (Peninsular Malaysia and Sabah) with various epithets and biris (Sarawak). Major species of the genus include S. cordata, S. foetida, S. kunstleri, S. macrophylla and S. parviflora. The sapwood is lighter in colour than the heartwood and is not sharply differentiated from the heartwood, which is straw-coloured to light brown.
Also known as Samrang and Samrong (Cambodia); Karar, Pinari and Udal (India); Kepuk and Pimping (Indonesia); Chong ban, Mai po heuang and Som hong (Laos); Letkok shaw-byu (Myanmar); Sterculia (Papua New Guinea); Kelumpang (Philippines); Telumbu (Sri Lanka); and Po-khanun and Samrong (Thailand).
The timber is moderately hard and modrately heavy with a density of 560-640 kg/m3 air dry. It is classified under Light Hardwood in Malaysia.
It is non-durable, being susceptible to both powder-post beetles and dry wood termites.
Texture is rather coarse and uneven due to the presence of large rays. Grain is straight to shallowly interlocked.
The timber is reputed to be easy to saw and work.
The timber is suitable for temporary light construction, packing boxes and crates, plywood and shuttering.
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.