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Alstonia mergalang
Alstonia mergalang (Alstonia angustifolia)

Family: Apocynaceae

Common names: Alstonia mergalang, Basong, Dita, Mergalang, Milkwood, Milky pine, Mo cua, Pulai, Shaitan wood, White cheesewood

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

Distribution overview: Likely grows in the Indo-Malayan region, Australia, and/or Polynesia.

Common uses: Baskets, Boxes and crates, Carvings, Casks, Decorative plywood, Food containers, General carpentry, Matchboxes, Matches, Packing cases, Plywood, Woodwork

Environment profile: Status unknown in many of its growth areas

Tree size: Tree height is 20-30 m

Colors: the heart isYellow, Yellowish whiteand the sapwoodWhite, Yellow.The grain isStraight, the textureMedium to coarseand the lusterMedium

Natural durability: Vulnerable to attack by powder-post beetles, susceptible to sap stain

Odor: No specific smell or taste

Kiln Schedules: T10 - D4S (4/4)US

Ease of Drying: Reconditioning Treatement

Comments: Large slit-like canals containing latex are usually present

Blunting Effect: Little

Boring: Good (75+ pieces out of 100 will yield good to excellent results)

Carving: Good results

Cutting Resistance: Low resistance to sawing

Gluing: Moderate gluing properties

Mortising: Finishes well

Moulding: Good moulding properties

Movement in Service: Good moulding properties

Nailing: Holds nails well, Very Good to Excellent

Planing: Planes well, to a good finish

Response to hand tools: Responds well to hand tools

Screwing: Good screw holding properties, Very Good to Excellent Results; Turning: Good results


  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,3
Density 400 kg/m3
Bending Strength 353 541 kg/cm2
Crushing Strength 192 308 kg/cm2
Hardness 204 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 62 73 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 3 %
Weight 400 320 kg/m3
Maximum Load cm-kg/cm3
Toughness 201 cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 5027 7699. psi
Density 25 lbs/ft3
Hardness 451 lbs
Maximum Crushing Strength 2734 4382. psi
Stiffness 882 1042. 1000 psi
Toughness 175 inch-lbs
Specific Gravity 0.3
Weight 25 20. lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %

Hardness (side grain) = soft
Compression strength (parallel to grain) = low
Medium density

Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.
*Come interpretare i dati (manleva su eventuali imprecisioni)