Atcapali (Stereospermum chelonoides)
Family: Bignoniaceae
Common names: Atcapali, Bolzel, Chota padar, Chota palang, Dharmara, Dunu madala, Kala goru, Kall-udi, Karingkura, Kariyam, Koosga, Kuring-kura, Lunu-madala, Moka yapa, Mukarti, Padar, Pader, Padri, Pamphunia, Parari, Pareya auwal, Pareya-auwal, Paroli, Parral, Pathiri, Pindri, Pisul, Pombathiri, Pomleathiri, Pompathorai, Pon-padri, Singwe thakutpo, Singyen, Sirpang, Tagada, Taitu, Thagu, Thande, Tsaingtsa, Vela-padri
Distributed in: Bangladesh, Burma, India, Sri Lanka (Oceania and S.E. Asia)
Common uses: Boat building (general), Boxes and crates, Cabinetmaking, Canoes, Charcoal, Flooring, Furniture, Heavy construction, Light construction, Mine timbers, Oars, Plywood, Railroad ties, Structural work, Tool handles, Turnery, Vehicle parts
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isRed, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isStraight, the textureMediumand the lusterLustrous
Natural durability: Susceptible to insect attack, Very durable
Drying Defects: Splitting
Ease of Drying: Difficult
Comments: General finishing qualities are rated as poor General finishing qualities are rated as satisfactory
Blunting Effect: Blunting effect on machining is fairly severe
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Gluing: Fairly Easy to Very Easy
Nailing: Fairly Easy to Very Easy
Planing: Very Good to Excellent
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Easy to machine
Polishing: Good;
- 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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705 |
kg/m3 |
Bending Strength |
542 |
849 |
kg/cm2 |
Crushing Strength |
296 |
468 |
kg/cm2 |
Hardness |
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752 |
kg |
Impact Strength |
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101 |
cm |
Shearing Strength |
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kg/cm2 |
Stiffness |
83 |
97 |
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 | Bending Strength | 7711 | 12078 | psi | Density | | 44 | lbs/ft3 | Hardness | | 1658 | lbs | Impact Strength | | 40 | inches | Maximum Crushing Strength | 4218 | 6664 | psi | Stiffness | 1188 | 1383 | 1000 psi | Weight | 43 | 35 | lbs/ft3 | |
Density (dry weight) = 31-37 lbs/cu. ft. Modulus of Elasticity (stiffness) = very low Modulus of Elasticity (stiffness) = low Max. crushing strength = medium Hardness (side grain) = medium Density (dry weight) = 61-67 lbs/cu. ft Density (dry weight) = 53-60 lbs/cu. ft Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 38-45 lbs/cu. ft. Bending strength (MOR) = medium Bending strength (MOR) = low Toughness-Hammer drop (Impact Strength) = medium Toughness-Hammer drop (Impact Strength) = low Toughness-Hammer drop (Impact Strength) = high Max. crushing strength = low Max. crushing strength = high
Bourdillon, T.F.,1908,The Forest Trees of Travancore,Travancore Government PressDesch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Gamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. LondonNazma,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 volsTewari, M.C., Jain, J.C.,1980,Utilization of Secondary Species,Journal of the National Building Organization 25(2) pp1-6
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