With its superb stability, good strength properties, easy workability — and most of all, its outstanding resistance to decay and rot — it’s no wonder that Teak ranks among the most desired lumbers in the world.
Heartwood golden brown, often with dark markins. Sapwood pale yellow and easily distinguished. The wood contains an oleo-resin, which gives it a greasy feel and a distinctive odour to freshly cut material.
Its texture is alternatively smooth and coarse because of woods ring-porous nature. Grain is usually straight. Freshly cut wood can be very variable in colour, with blotches and streaks, but prolonged exposure to light modifies the more extreme variations.
It is perhaps one of the most expensive lumbers on the market, at least for large-sized, non-figured wood.
Teak has a very high naturally occurring silica content from the sandy soil in which it grows, and this silica impregnates the fibers of the wood, making it nearly waterproof. Adding to Teak’s natural water resistance are the wood’s natural oils, which do double duty as natural insect repellants.
|Density (kg/m3 dry)||670||Hardness (Janka) (kN)||4.5||Resistance to split in nailing||Good|
|Specific gravity||0.67||Finish||Excellent||Resistance to split and screwing||Good|
|Modulus of rapture (Mpa dry)||106||Stability||Excellent||Gluing||Fair|
|Modulus of elasticy (Mpa dry)||10||Durable||Yes||Growing regoin||South America and Asia|
|Radial shrinkage %||1.5||Sapwood Lyctid Susceptible||No||Trees||25-35 year old|
|Tangential shrinkage %||2.5||Machining||Good||Round logs||Girth of 40-150 cm|