Atkuri (Wrightia tomentosa)
Family: Apocynaceae
Common names: Atkuri, Bili-kude, Bura machkunda, Daira, Dairi, Danghkyam-kaji, Darbela, Dharauli, Dudh-koraiya, Dudhari, Dudhi, Dudhiya, Gidda, Harido, Igasira, Jula, Kala inderjau, Kala-inderjow, Karingi, Keor, Khalawa, Kilawa, Kirra, Koila-pukri, Lanete, Lettokthein, Mai-lang, Mai-yang-khao-awn, Mailam pala, Mok, Pal kurwan, Palaperbi, Palsi, Pandu kura, Sandikuya, Selemnok, Tambada-kuda, Tambara kura, Taungsalat, Taungsalet, Tella pal, Tella pala, Thonthapalei, Tuar
Distributed in: Burma, India, Malaysia, Sri Lanka (Oceania and S.E. Asia)
Common uses: Carvings, Furniture, Sporting Goods, Turnery
Tree size: Tree height is 0-10 m
Colors: the heart isYellow, Yellow to golden-yellow to orangeThe grain isWavy, the textureFineand the lusterMedium
Natural durability: Non-durable, Perishable
Cutting Resistance: Easy to saw
Response to hand tools: Easy to machine
Turning: Very Good to Excellent Results
Staining: Staining (Characteristic) = coloured water-soluble extract
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- Numerical data Metric
- Numerical data English
- Strength properties
- References
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| Item |
Green |
Dry |
Metric |
| Specific Gravity |
|
|
|
| Density |
|
512 |
kg/m3 |
| Bending Strength |
654 |
1024 |
kg/cm2 |
| Crushing Strength |
150 |
275 |
kg/cm2 |
| Hardness |
|
451 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
155 |
kg/cm2 |
| Stiffness |
71 |
84 |
1000 kg/cm2 |
| Tangential Shrinkage |
|
|
% |
| Radial Shrinkage |
|
|
% |
| Weight |
|
|
kg/m3 |
| Maximum Load |
|
|
cm-kg/cm3 |
| Toughness |
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cm-kg |
| Static Bending |
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kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 9310 | 14566 | psi | | Density | | 32 | lbs/ft3 | | Hardness | | 995 | lbs | | Maximum Crushing Strength | 2139 | 3916 | psi | | Shearing Strength | | 2205 | psi | | Stiffness | 1017 | 1199 | 1000 psi | | Weight | 31 | 25 | lbs/ft3 | |
Density (dry weight) = 31-37 lbs/cu. ft. Shearing strength (parallel to grain) = medium Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Hardness (side grain) = soft Bending strength (MOR) = medium
Bourdillon, T.F.,1908,The Forest Trees of Travancore,Travancore Government PressGamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. LondonMcCann, C.,1947,Trees of India: A Popular Handbook,D.B.Taraporevala Sons & Co. BombayPearson, R.S., Brown, H.P.,1932,Commercial Timbers of India,Govt. Printer Calcutta,2 volsSono, P.,1974,Merchantable Timbers of Thailand.,Forest Products Research Division, Royal Forest Department, Bangkok,,Thailand.
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