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Kerantai
Kerantai (Santiria laevigata)

Family:

Common names: Kerantai

Distributed in: Malaysia (Oceania and S.E. Asia)

Distribution overview: The species occurs in Malaysia.

Common uses: Construction

Environment profile: Unknown because of lack of information

Tree size: Tree height is 30-40 m

Colors: the heart isReddish brown, Very distinct from the sapwood The grain isWeak (figure), the textureMediumand the lusterMedium

Natural durability: Durable, Sapwood susceptible to attack by powder post beetles

Silica Content: Contains high levels of silica (> 0.5% of dry weight) Silica levels of 0.62 to 2.14 percent of ovendry weight have been recorded. A silica level of 0.05% is generally considered to be high enough to affect some wood properties.

Kiln Drying Rate: Naturally dries quickly

Drying Defects: Slight tendency of sapwood to stain , Splitting

Ease of Drying: Slowly

Comments: Kerantai timbers are reported to have very poor machining characteristics because of excessively high silica content. Cutting edges of saws and other tools are dulled very severely and rapidly, and logs are reported to saw with extreme difficulty. Although the species is relatively abundant in some areas within its range, it is of little economic importance probably because it is very difficult to machine. Planed surfaces are smooth but non-lustrous, and worked surfaces tend to be rather plain in appearance, except for a slight ribbon figure

Cutting Resistance: Moderate to saw

Planing: Wavy

Resistance to Impregnation: Sapwood absorbs preservatives readily

Response to hand tools: Easy to Work


Polishing: Fair to Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density kg/m3
Bending Strength kg/cm2
Crushing Strength 131 204 kg/cm2
Hardness kg
Impact Strength 68 cm
Shearing Strength kg/cm2
Stiffness 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
Crushing Strength 1875 2911. psi
Impact Strength 27 inches
Maximum Crushing Strength 4895 7845. psi
Specific Gravity 0.47


Desch, H. E. 1957. Manual of Malayan Timbers - Volume I. Malayan Forest Records, No. 15. Malaya Publishing House Ltd., Singapore.Desch, H. E. 1957. Manual of Malayan Timbers. Malayan Forest Records, 28(30):315-318. Malaya Publishing House Ltd., Singapore.Maeglin, R., C.K. Baah, G. Troemmer, J.D. Danielson, and S.P. Loehnertz. 1989. Pre-project Report - Sawing of Difficult Species. Prepared for International Tropical Timber Organization (ITTO) by United States Department of Agriculture (USDA, Forest Service, Forest Products Laboratory, Madison, Wisconsin.WCMC. 1992. Conservation Status Listing: Trees and Timbers of the World. World Conservation Monitoring Center (WCMC, Plants Program, 219 Huntingdon Road, Cambridge, CB3 ODL, United Kingdom.
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