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Anonang
Anonang (Cordia dichotoma)

Family: Boraginaceae

Common names: Anonang, Anonang-bakir, Cordia, Guma, New Guinea cordia, Viri

Distributed in: Australia, China, India, Malaysia, Papua New Guinea, Philippines, Vanuatu (Oceania and S.E. Asia)

Common uses: Agricultural implements, Boat building (general), Boxes and crates, Fuelwood, Furniture, Handles: general, Heavy construction, Light construction, Moldings, Plywood, Tool handles

Environment profile: Rare

Tree size: Tree height is 0-10 m

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite, White to yellow.The grain isWeak figure, the textureUniformand the lusterDull

Natural durability: Resistant to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to marine borer attack

LightInduced Color Change: Darker

Drying Defects: Distortion, Splitting

Ease of Drying: Thick Stock Requires Care

Tree Identification: Bole/stem form is misshapen

Comments: General finishing qualities are rated as good

Cutting Resistance: Easy to saw

Gluing: Fairly Easy to Very Easy

Planing: Fairly Easy to Very Easy

Resistance to Impregnation: Heartwood is resistant

Response to hand tools: Easy to machine

Turning: Fairly Easy to Very Easy

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 448 kg/m3
Bending Strength 504 790 kg/cm2
Crushing Strength 275 449 kg/cm2
Hardness 298 kg
Impact Strength cm
Shearing Strength 62 kg/cm2
Stiffness 79 92 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 432 384 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 7178 11247 psi
Density 28 lbs/ft3
Hardness 657 lbs
Maximum Crushing Strength 3916 6397 psi
Shearing Strength 882 psi
Stiffness 1131 1321 1000 psi
Weight 27 24 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 4 %

Shearing strength (parallel to grain) = very low
Max. crushing strength = medium
Density (dry weight) = 23-30 lbs/cu. ft.
Modulus of Elasticity (stiffness) = very low
Density (dry weight) = 31-37 lbs/cu. ft.
Bending strength (MOR) = low
Shrinkage, Tangential = very small
Shrinkage, Radial = very small
Modulus of Elasticity (stiffness) = low
Hardness (side grain) = very soft
Hardness (side grain) = soft
Bending strength (MOR) = medium

Bolza, E., Kloot, N.H.,1976,The Mechanical Properties of 81 New Guinea Timbers,C.S.I.R.O. Div. Building Res. Tec.Paper (2nd series) 11Bolza, E.,1975,Properties and Uses of 175 Timber Species from Papua New Guinea and West,Irian,C.S.I.R.O. Div. Building Research Report,no.34Burgess, P.F.,1966,Timbers of Sabah,Sabah Forest Record, no.6E.H. Walker,1954,Important Trees of the Ryukyu Islands,United States Civil Administration of the Ryukyu Islands Special Bulletin,No. 3Eddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaNazma,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 IndustriesOsborne, L.D.,1970,Decay resistance of South-West Pacific rain forest timbers,C.S.I.R.O.,Div. for Prod., Tech. paper No.56Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd edition
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