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Aligango
Aligango (Hymenodictyon excelsum)

Family: Rubiaceae

Common names: Aligango, Bandara, Barthoa, Bartu, Bauranga, Bhamina, Bhaulan, Bhawarmal, Bhawasar, Bhohar, Bhorkond, Bhorkoru, Bhorsal, Bhurkul, Biharuk, Blalena, Bodoka, Burja, Burker, Burkunda, Chetippa, Dadhippa, Dhauli, Doncelo, Dondru, Dudi-yetta, Dumsa-gyaw, Itthilei, Kakurkat, Karar, Kedah, Khusan, Khutan, Konsa, Kukurkat, Kuthan, Lamkana, Lunia, Mahuwa, Mai-sonpu, Malam kall, Medang keladi, Monnabillu, Nichan kadambu, Peran tholi, Peranjoli, Peruntholi, Phaldu, Potur, Purgur, Sagapur, Sali, U-lok, Vella-kadambu, Yetta

Distributed in: Bangladesh, Burma, India, Indonesia, Malaysia, Philippines, Thailand (Oceania and S.E. Asia)

Common uses: Artificial limbs, Boxes and crates, Brush backs & handles, Cabinetmaking, Cooperages, Furniture, Matches, Mathematical instruments, Musical instruments: percussion, Pencil, Textile equipment, Toys

Tree size: Tree height is 30-40 m

Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodSame as heartwood .The grain isStraight, the textureMedium to coarseand the lusterLustrous

Natural durability: Resistant to powder post beetles, Susceptible to insect attack

Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid

Kiln Drying Rate: Fairly rapid (11-17 days for boards under 32 mm, to 31-51 days for boards greater than 63 mm)

Drying Defects: Slight surface checking, Slight twist/warp

Ease of Drying: Easy

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as satisfactory

Cutting Resistance: Cutting Resistance with green wood is easy

Resistance to Impregnation: Heartwood is permeable

Response to hand tools: Easy to machine

Turning: Good results

Varnishing: Satisfactory ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 464 kg/m3
Bending Strength 303 464 kg/cm2
Crushing Strength 100 188 kg/cm2
Hardness kg
Impact Strength 38 cm
Shearing Strength kg/cm2
Stiffness 71 84 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 4310 6606 psi
Density 29 lbs/ft3
Impact Strength 15 inches
Maximum Crushing Strength 1432 2675 psi
Stiffness 1017 1199 1000 psi
Weight 28 25 lbs/ft3

Density (dry weight) = 31-37 lbs/cu. ft.
Modulus of Elasticity (stiffness) = very low
Density (dry weight) = 23-30 lbs/cu. ft.
Toughness-Hammer drop (Impact Strength) = very low
Max. crushing strength = low
Max. crushing strength (stiffness) = very low
Bending strength (MOR) = very low
Bending strength (MOR) = low

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. LondonHighley, T.L., Scheffer, T.C.,1970,Natural Decay Resistance of 30 Peruvian Woods,U.S.A. Agriculture Department, Forest Service, Forest Products Laboratory,,Madison Research Paper,No.143Nazma,1981,A handbook of Kerala Timbers,Kerala Forest Research Institute Research Report, No.9Ng, F.S.P. (Ed,1989,Tree Flora of Malaya A Manual for Foresters Volume 4,Forest Research Institute Malaysia Ministry of Primary IndustriesPearson, R.S., Brown, H.P.,1932,Commercial Timbers of India,Govt. Printer Calcutta,2 volsReyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Sharma, S.N., et al,1960,Experiments on the High Temperature Drying of some Indian Timbers,Indian Forest Bulletin (N.S.,No.230
*Come interpretare i dati (manleva su eventuali imprecisioni)