Thai · Dipterocarpaceae family
Teng ไม้เต็ง
Shorea obtusa
Teng pricing
This species is sourced in batches — you can still get an indicative estimate, and our team will confirm the price and the next batch
Estimate your projectThe final price depends on board width, length, grade and order quantity
Very hard, strong, carries load well
Very hard, well suited to exterior decking · figures are "balau" trade-group values tested at ~40% MC (not directly comparable with 12%)
Mechanical properties of Teng
| Property | Value | Data status |
|---|---|---|
| Janka hardness | ≈ 8,500 N MC 40% (balau group 8010–9520) | approximate — group-level figure |
| Density | ≈ 1,000 kg/m³ MC 15% | approximate — group-level figure |
| Bending strength (MOR) | ≈ 120 MPa MC 40% (group 115–125) | approximate — group-level figure |
| Stiffness (MOE) | ≈ 20 GPa MC 40% (group 18.4–22.1) | approximate — group-level figure |
| Compressive strength parallel to grain | ≈ 65 MPa MC 40% (group 60–71) | approximate — group-level figure |
| Radial shrinkage | ≈ 4.2% | approximate — group-level figure |
| Tangential shrinkage | ≈ 9.3% | approximate — group-level figure |
≈ approximate = a figure for the trade group or plantation-grown timber, not a test result for this species itself · MC = moisture content at testing · Real values vary with the source of the timber, its age and how it was kiln-dried
Durability and working properties
- Durability
- Naturally durable heartwood · sapwood prone to fungal attack · hard to treat with preservative
- Machining / working
- Fairly difficult, hard to saw once dry, splits easily when nailed
Sustainability and sourcing
Teng grows and is planted in Thailand. Using timber with a traceable local source keeps transport short and helps protect trees in natural forest.
WisutWood uses legal timber, can issue sawn-timber control documents, and kiln-dries to 12% moisture content or less, so the woodwork lasts and does not have to be torn out and replaced.
Questions about Teng
What is the botanical name of Teng, and what else is it called?
The botanical name of Teng is Shorea obtusa. It belongs to the Dipterocarpaceae family. Trade names: Balau, Selangan batu (group) · Local names: Central Teng
How hard is Teng?
Janka hardness ≈ 8,500 N (approximate — group-level figure, MC 40% (balau group 8010–9520)) · Density ≈ 1,000 kg/m³ (approximate — group-level figure, MC 15%)
Can Teng be used outdoors?
Suitable for outdoor use · Durability: Naturally durable heartwood · sapwood prone to fungal attack · hard to treat with preservative
What work is Teng good for?
Joists, beams, structural work, flooring, decking — Very hard, strong, carries load well
Can WisutWood build my job in Teng?
Yes, on enquiry. Teng is sourced in batches, so price and lead time depend on the sizes and the sourcing round.
