| Scientific Name | Tectona grandis L.f. |
| Trade Name | Teak |
| Local Name | Thekku |
| Family | Verbenaceae |
| Tree Size | Large to very large |
| Tree Height ( m ) | 25 - 45 |
| Tree Diameter ( cm ) | 190 |
| Tree Distribution | Occurs in India,Burma,Thailand,Indo-china and Java. Also planted in many parts of East and West Africa and West Indies |
| Sapwood-Heartwood Distinction | Distinct |
| Sapwood Colour | White or pale yellow |
| Heartwood Colour | Light golden brown when fresh,turning brown or dark brown on exposure,often with darker streaks |
| Hardness | Moderately hard |
| Specific Gravity Based on Weight Over-dry and Volume Green | 0.62 |
| Weight | Moderately heavy |
| Weight(Kg)/cubic meter at 12% Moisture Content | 720 |
| Texture | Medium coarse textured |
| Grain | Straight grain |
| Growth Rings | Distinct |
| Porosity | Ring porous |
| Vessel Size | Earlywood has large to medium sized vessels and latewood has small to medium sized |
| Vessel Arrangement | Solitary and in radial multiples of two to three |
| Vessel Diameter | 200 - 400 270 |
| Vessel Element Lenght | 190 - 680 680 |
| Perforation | Simple |
| Pit Outline | Circular |
| Pit Size | Small to medium ( 6-9 µm),vestured |
| Vessel Ray Pitting | Alternate and pit outline circular |
| Ray Nature | Moderately broad , visible to the naked eye and widely spaced |
| Ray Arrangement/Type | 3-4 cells wide, homogeneous, wholly made up of procumbent cells showing a tendency towards heterogeneity with one or two marginal raws of square cells |
| Ray Number | 3 - 4 |
| Ray Height | 510 - 930 655 |
| Fibre Walls | Thick walled, septate; simple pits confined to the radial walls |
| Fiber Length | |
| Modulus of Rupture in kg/cm2 (Green) | 841 |
| Modulus of Elasticity in kg/cm2 (Green) | 109700 |
| Modulus of Rupture kg/cm2 (Dry) | 959 |
| Modulus of Elasticity in kg/cm2 (Dry) | 119600 |
| Uses | Used as a standard for comparison for other timbers. Also for shipbuilding, construction, paneling, interior fittings, railway sleepers, furniture and cabinet making. It is an outstanding timber for joinery. Because of its resistance to chemicals used in industrial chemical plants, beams & rafters, sport goods, ornamental house posts, boards & panels, window & door frames, bridges, piles & posts, handicrafts, joinery & interior fittings, wagons and boxes. |
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