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Kayu pontianak
Kayu pontianak (Parishia insignis)

Family: Anacardiaceae

Common names: Kayu pontianak, Layang layang, Malabog, Red dhup, Rengas susu, Sepul

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

Common uses: Furniture, Matches, Plywood

Tree size: Tree height is 20-30 m

Colors: the heart isGreen/grey, Redand the sapwoodBrown, Red.The grain isWeak figure, the textureMedium to coarseand the lusterMedium

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

Kiln Drying Rate: Naturally dries quickly

Drying Defects: Slight cupping, Slight end splitting

Ease of Drying: Rapidly

Tree Identification: Bole/stem form is buttressed

Comments: General finishing qualities are rated as satisfactory

Boring: Fairly easy to very easy

Cutting Resistance: Cutting Resistance with dry wood is difficult

Gluing: Fairly Easy to Very Easy

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Planing: Planes to a poor finish

Response to hand tools: Fairly Difficult to Difficult to Work

Sanding: Very Good to Excellent Results

Veneering qualities: Suitable for peeling, Suitable for slicing

Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 576 kg/m3
Bending Strength kg/cm2
Crushing Strength 150 275 kg/cm2
Hardness kg
Impact Strength 38 cm
Shearing Strength kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 560 448 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Density 36 lbs/ft3
Impact Strength 15 inches
Maximum Crushing Strength 2139 3916 psi
Weight 35 28 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 9 %

Shrinkage, Tangential = fairly large
Shrinkage, Radial = very small
Toughness-Hammer drop (Impact Strength) = very low
Max. crushing strength = low
Density (dry weight) = 38-45 lbs/cu. ft.
Density (dry weight) = 31-37 lbs/cu. ft.

Burgess, P.F.,1966,Timbers of Sabah,Sabah Forest Record, no.6Dadswell, H.E., Ingle, H.D.,1948,The anatomy of timbers of the South West Pacific area,C.S.I.R.O. Australian Reprint 109Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Ng, 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 vols
*Come interpretare i dati (manleva su eventuali imprecisioni)