Keruing - not quite as good as Bankirai


Keruing is also a very hard and consistently resilient tropical wood. However, its characteristics are not quite as outstanding as those of other, high-quality tropical woods, such as Bangkirai. Learn more about Keruing and its use in this post.

Technical values

Reading Descriptionvalue
Weight fresh and dry950 - 1,100 kg / m³, dried 720 kg / m³
Compressive strengthapprox. 65 N / mm²
flexural strengthapprox. 120 N / mm²

Types and other names

Under the trade name Keruing many different types of wood are sold. Most species have similar characteristics, but there are also differences. Thus, for example, the wood from Burma and usually referred to as "narrow" wood is still much harder than the already very hard, other Keruing species.

Other trade names

Since keruing is very common in many Southeast Asian countries, there are also a number of other trade names. The best known are:

  • Dau
  • Kanyin
  • Yang as well
  • Hora, Hollong, Gurjun or Apitong

DIN designation

The DIN name for Keruing is DPXX

Appearance

Grain

Keruing is coarse-pored, the pores are common, but are widely scattered. Clearly visible pore grooves occur in many species. The rays of wood are always easy to see, mostly resin channels are visible.

colour

The sapwood is gray to slightly brownish, it can also have reddish color shades. The heartwood is fresh slightly pink, darkened later but to a pale yellowish-brown color.

properties

Keruing is very hard and heavy, its strength properties correspond to very hard tropical woods like Afzelia and are far superior to those of native oak wood. The high hardness, in connection with the numerous silicic acid deposits in the wood, makes the machining difficult and requires special tools.

Shrinkage and drying

Drying is difficult and requires great care. It takes a long time to dry thoroughly. Keruing swells and shrinks strongly and tends to cracking and significant deformation in careless or too fast drying.

resistance

Keruing is only moderately resistant to pests and moderately weather resistant. However, there may be variations from wood to wood as the wood of individual tree species may have different durability properties. In general, keruing is assigned to resistance class 3, which corresponds roughly to Douglas fir.

use

Keruing can be used outdoors when additional impregnation is required, and no particular dimensional stability is expected. Otherwise keruing is used almost exclusively as utility wood in wagon construction, for boarding and for sleepers and as packaging timber. Rarely, veneers are also produced.

ancestry

Keruing is very common in all countries of Southeast Asia. The particularly hard qualities with high strength usually come from Burma (Myanmar).

Here you will find an overview of the most important types of wood worldwide. An overview of the most important types of tropical wood, such as keruing, can be found here

Tips & Tricks

Single species can be very rich in resin, giving off larger amounts of resin when heated. But this is just the hallmark of individual (inferior) Keruing types.


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