Aiya pala (Wrightia tinctoria)
Family: Apocynaceae
Common names: Aiya pala, Aiya-pala, Amkudu, Dehakali, Dhantha-pala, Dudhi, Dudiya, Eeccha, Irum palei, Irumpala, Kala kudu, Kalakudi, Kalakura, Kali dudhi, Khirni, Kodmurki, Kordi, Kuda, Kura, Nila palai, Nila palei, Pala, Pala-parki, Palavareni, Pullavari, Repala, Tedlapal, Tella pala, Thonda pala, Thontha palei, Veypale
Distributed in: Burma, India (Oceania and S.E. Asia)
Common uses: Agricultural implements, Boxes and crates, Carvings, Chemical derivatives, Heavy construction, Light construction, Mathematical instruments, Sporting Goods, Toys, Turnery
Tree size: Tree height is 30-40 m
Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodSame as heartwood, Yellow.The grain isWavy, the textureFineand the lusterLustrous
Natural durability: Non-durable, Perishable
Drying Defects: No surface checking, Splitting
Ease of Drying: Easy
Comments: General finishing qualities are rated as good
Cutting Resistance: Cutting Resistance with green wood is easy
Nailing: Fairly Difficult to Very Difficult
Response to hand tools: Easy to machine
Turning: Good results
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
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624 |
kg/m3 |
Bending Strength |
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kg/cm2 |
Crushing Strength |
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kg/cm2 |
Hardness |
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kg |
Impact Strength |
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cm |
Shearing Strength |
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kg/cm2 |
Stiffness |
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1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
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% |
Weight |
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kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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 |  |  |  | Item | Green | Dry | English | Density | | 39 | lbs/ft3 | Weight | 38 | 31 | lbs/ft3 | |
Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft.
Bourdillon, T.F.,1908,The Forest Trees of Travancore,Travancore Government PressNazma,1981,A handbook of Kerala Timbers,Kerala Forest Research Institute Research Report, No.9Pearson, R.S., Brown, H.P.,1932,Commercial Timbers of India,Govt. Printer Calcutta,2 vols
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