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Sepetir
Sepetir (Sindora javanica)

Family: Leguminosae

Common names: Gu, Kayu galu, Makata, Petir, Sepetir, Sindur, Supa

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

Distribution overview: Several species in the genus Sindora are reported to occur in south-east Asia.

Common uses: Bedroom suites, Building materials, Cabinetmaking, Chairs, Chests, Concealed parts (Furniture), Core Stock, Decorative veneer, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Excelsior, Figured veneer, Fine furniture, Floor lamps, Furniture , Furniture components, Furniture squares or stock, General carpentry, Handles, Hatracks, Interior construction, Joinery, Kitchen cabinets, Living-room suites, Office furniture, Paneling , Plain veneer, Radio - stereo - TV cabinets, Rustic furniture, Shafts/Handles, Stools, Tables , Tool handles, Utility furniture, Veneer, Wainscotting, Wardrobes

Product sources: Various species in the genus are reported to produce the timber known commercially as Sepetir.

Environment profile: Status has not been officially assessed

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isRed, Yellowand the sapwoodWide, Yellow.The grain isStraight to shallowly interlocked, the textureMediumand the lusterMedium

Natural durability: Susceptible to termite attack, Very low natural resistance to decay in ground contact in the tropical regions

Odor: Spicy odor which persists even after the wood is seasoned

Kiln Schedules: T8-B3 (4/4)

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Internal Honeycombing Possible, May distort and end-split slightly during drying

Ease of Drying: Slowly

Comments: Material loss during conversion is rather high because of the wide and unusable sapwood Oily Waste Factor

Blunting Effect: Severe dulling effect on cutting edges

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Cutting Resistance: Easy to saw

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Pre-boring recommended, Tends to split during nailing

Planing: Woodworking properties usually vary

Resistance to Impregnation: Satisfactory preservative absorption and retention

Response to hand tools: The operation requires sharp cutting edges for best results

Routing recessing: Fairly Easy to Very Easy

Sanding: Fair sanding qualities

Veneering qualities: Best figure display in veneers is achieved through rotary-cutting

Turning: Fairly Easy to Very Easy

Polishing: Polishing properties improve considerably after surface treatment ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 673 kg/m3
Bending Strength 678 997 kg/cm2
Crushing Strength 341 539 kg/cm2
Hardness 693 kg
Impact Strength cm
Shearing Strength 124 kg/cm2
Stiffness 112 134 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 9654 14187 psi
Density 42 lbs/ft3
Hardness 1529 lbs
Maximum Crushing Strength 4861 7669 psi
Shearing Strength 1767 psi
Stiffness 1603 1908 1000 psi
Weight 41 34. lbs/ft3

Resists wearing, denting and marring fairly well
Heavy
Fairly hard
Density=High
Crushing strength = high
Compression strength (parallel to grain) = high
Bending strength in air-dried condition...is strong

Desch, H. E. 1957. Manual of Malayan Timbers - Volume I. Malayan Forest Records, No. 15. Malaysia Publishing House Ltd., Singapore.HMSO.1972.Handbook of Hardwoods, 2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Her Majesty's Stationery Office, London.Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1Rendle, B.J. Editor. 1970. World Timbers, Volume Three - Asia & Australia & New Zealand. Published by Ernest Benn Limited, Bouverie House, Fleet Street, London.
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