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Charamas tukCharamas tuk
Charamas tuk (Vatica cinerea)

Family: Dipterocarpaceae

Common names: Charamas tuk, Chramas, Chramas sopheas, Chramas tuk, Dam dang, Dang, Lau tau giam, Lau tau nui, Lau tau trang, Phan cham, Phancham, Pinang baik, Resak, Resak laut, Sak don, Sak khao, Sak nam, Sak-hin, Si, Teng dong, Tra lac, Tralac, Tralac mosau, Tralac tuk

Distributed in: Burma, Cambodia, Laos, Malaysia, Thailand, Vietnam (Oceania and S.E. Asia)

Common uses: Flooring, Heavy construction, Light construction, Marine construction, Piling, Railroad ties

Tree size: Tree height is 40-50 m

Colors: the heart isWhite, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureMediumand the lusterMedium

Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to insect attack

Kiln Schedules: Dry at a slow speed

Drying Defects: Distortion, Internal Honeycombing Possible

Ease of Drying: Moderately Difficult to Difficult

Tree Identification: Bole/stem form is buttressed

Blunting Effect: Blunting effect on machining is fairly severe

Boring: Fairly easy to very easy

Cutting Resistance: Easy to saw

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Fair to Good , Fairly Easy to Very Easy

Planing: Very Good to Excellent

Resistance to Impregnation: Permeable sapwood

Response to hand tools: Easy to machine

Veneering qualities: Veneers easily, Veneers moderately easy

Screwing: Fair to Good Results, Fairly Easy to Very Easy; Turning: Fair to Good Results

Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 817 kg/m3
Bending Strength 1469 2058 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1051 kg
Impact Strength cm
Shearing Strength 211 kg/cm2
Stiffness 166 193 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 20907 29271 psi
Density 51 lbs/ft3
Hardness 2318 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 3015 psi
Stiffness 2373 2752 1000 psi
Weight 50 48 lbs/ft3

Density (dry weight) = 67-75 lbs/cu. ft
Density (dry weight) = 61-67 lbs/cu.ft
Density (dry weight) = 53-60 lbs/cu. ft
Shearing strength (parallel to grain) = high
Modulus of Elasticity (stiffness) = high
Max. crushing strength = high
Hardness (side grain) = hard
Density (dry weight) = 46-52 lbs/cu. ft.
Bending strength (MOR) = very high

Brown, W.H.,1978,Timbers of the World, No. 4 South East Asia,TRADA, Red Booklet SeriesChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Fundter, J.M.,1982,Names for Dipterocarp timbers and trees from Asia,Pudoc, Wageningen, NetherlandsI. Soerianegara and R.H.M.J. Lemmens (Editors,1993,Plant Resources of South-East Asia 5,(PROSEA, 1,Timber trees: Major commercial timbers,Pudoc Scientific Publishers, Wageningen 1993Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A.Smitinand, T., Et al,1980,A Manual of Diplerocarpaceae of Mainland South-East Asia,Forest Department, ThailandSono, P.,1974,Merchantable Timbers of Thailand.,Forest Products Research Division, Royal Forest Department, Bangkok,,Thailand.Symington, C.F.,1943,Foresters manual of Dipterocarps,Malaysia Forest Record,No.16
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