Koninklijke Houthandel G. Wijma & Zonen B.V.


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Freshly cut, the heartwood of Bangkirai is yellow to grey-brown, sometimes with a reddish tint. In light, it will quickly discolour to brown and then slowly to dark brown. The white to light brown coloured sapwood clearly stands out from the heartwood and is 20-70 mm thick.

Properties of this timber species


  • Botanical name: Shorea atrivernosa / Shorea foxworthyi / Shorea gisok / Shorea glauca / Shorea laevis / Shorea maxwelliana / Shorea spec. div.
  • ATIBT name: Balau
  • Other names: Selangan, Batu

 Quality requirements

  • Bangkirai is listed in the Dutch norm NEN 5493 'Quality Requirements For Hardwoods In Road Construction Works, Hydraulic Engineering Works And Other Structural Applications’

 Strength class

  • Bangkirai quality class Category 3/Tropical/NEN 5493 is classed in strength class D40 (NEN-EN 338)


  • Because of its good mechanical properties and durability it is used for outdoor applications, in heavy structures, bridges, bridge decks, bridge parapets, noise barriers, lock gates and other hydraulic works in freshwater, such as shore piling and jetties


  • Resistance to fungi: class 2 (durable) for wood with a density of more than 850 kg/m3 at 12% moisture content
  • Resistance to insects: Termites class D (sapwood and heartwood very durable)


  • (700)-930-(1150) kg/m3 at 12% moisture content

source: Houtvademecum © 2010 Centrum Hout Almere, 10e herziene druk

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