Berombong (Timonius wallichianus)
Family: Rubiaceae
Common names: Berombong, Jantan, Merombong, Tabah, Tentulang, Timonius, Tulang-tulang
Distributed in: Australia, Malaysia (Oceania and S.E. Asia)
Common uses: Fuelwood, Heavy construction, Light construction, Posts
Tree size: Tree height is 20-30 m
The grain isStraight, the textureCoarse
Natural durability: Resistant to wood staining fungal attack, Susceptible to insect attack
Drying Defects: Moderate end spitting
Blunting Effect: Little
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Gluing: Fairly Difficult to Very Difficult
Planing: Fairly Easy to Very Easy
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Fairly Difficult to Difficult to Work
Polishing: Fair to Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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| Item |
Green |
Dry |
Metric |
| Specific Gravity |
|
|
|
| Density |
|
|
kg/m3 |
| Bending Strength |
429 |
674 |
kg/cm2 |
| Crushing Strength |
150 |
275 |
kg/cm2 |
| Hardness |
|
451 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
|
kg/cm2 |
| Stiffness |
|
|
1000 kg/cm2 |
| Tangential Shrinkage |
|
|
% |
| Radial Shrinkage |
|
|
% |
| Weight |
|
|
kg/m3 |
| Maximum Load |
|
|
cm-kg/cm3 |
| Toughness |
|
|
cm-kg |
| Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 6111 | 9589 | psi | | Hardness | | 995 | lbs | | Maximum Crushing Strength | 2139 | 3916 | psi | | Shearing Strength | | 882 | psi | |
Shearing strength (parallel to grain) = very low Max. crushing strength = low Hardness (side grain) = soft Bending strength (MOR) = low
Bolza, E., Kloot, N.H.,1963,The Mechanical Properties of 174 Australian Timbers,C.S.I.R.O. Division of Forest Products Technological Paper,No.25Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15
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