T
T
a
a
u
u
n
n
Botanical Names:
Pometia spp. Principally
P. pinnata, P. tomentosa
Family Name:
Sapindaceae
Local Names:
Malugai (Philippines), kasai, sibu (Sarawak, Sabah) truong (Vietnam), aia fai, mala, ula,
ako dawa (Solomon Is.) tava (Western Samoa), ahabu, matoa (PNG), malugay, akwa
Description
The timbers range in colour from pale brown, through pinkish-brown to a deep red brown. A common
feature is the white or pink desposits in the vessels sapwood is pale coloured between 25mm and
50mm wide but not sharply demarcated from the heartwood. Wood shavings will froth when shaken in
water due to the presence of saponin. The timber is usually straight grained but occasionally, slightly
interlocked. It has a moderately coarse texture. A slight flame-like figure is sometimes seen on back
sawn material and a ribbon or striped figure is evident on quarter sawn material where interlocked
grain occurs. It has a slight, natural lustre. The timber is non-siliceous. There is neither taste no odour.
Taun occurs in low-lying coastal and riverine areas from Sri Lanka through southeast Asia, Papua New
Guinea to the Solomons and Samoa.
Tree
Properties
Uses
Height
(m)
Diam.
(m)
Origin of data
Density
Strength
Group
Shrinkage
Durability
Lyctus
Suscep.
25 - 45
0.6 – 0.9
Papua New Guinea
Malaysia
Indonesia
Philippines
Solomon Is
Samoa
8
8+
8+
8+
8
8
S4
S4
S4
S4
S4
(S4)
4 – 5
3
S
1, 2, 3,
4, 6, 8,
9, 10,
11, 12,
13, 14,
15, 17,
18, 20,
21, 22,
27, 28
Information in above table relates to
Classification Information for all species.
Stress Grades
F7, F8, F11, F14 (unseasoned), F11, F14, F17, F22 (seasoned), when visually stress graded in
accordance with AS2082-2000, ‘Visually stress-graded hardwood for structural purposes.’
Characteristics
Taun works easily with most machine and hand tools, but properties may vary with site and form.
Timber saws cleanly, producing fair to excellent surfaces. Peeling properties variable. Good quality
stock is suitable for face veneer in plywood. Species glues, screws and nails well, takes nice polish,
paints and stains satisfactorily. Shrinkage and ensity variable, steam-bending properties generally
good, moisutre movement low to medium. Heatwood impermeable, sapwood moderately resistant to
impregnation. Species susceptible to pinhole borer and marine borer attack, and brown-stain.
References:
1)
Queensland Government – Harwoods Queensland
URL: http://www.dpi.qld.gov.au/hardwoodsqld/7680.html
2)
Bolza, E. & Keating, W.G. 1982, Characteristics, Properties and Uses of Timbers
South-east Asia, Northern Australia and the Pacific Volume 1, CSIRO, Australia
3)
Eddowes, Peter. J. 1977,
Commercial Timbers of Papua New Guinea (Their properties & Uses),
Forest Products Research Centre, Papua New Guiinea