| Scientific Name | Intsia palembanica Miq. & Intsia bijuga (Colebr.) |
| Trade Name | Merbau |
| Local Name | Koyla, Merbau |
| Family | Leguminosae |
| Tree Size | Large |
| Tree Height ( m ) | 15 - 21 |
| Tree Diameter ( cm ) | 150 |
| Tree Distribution | South East Asia and islands of South West Pacific |
| Sapwood-Heartwood Distinction | Distinct |
| Sapwood Colour | Pale yellow |
| Heartwood Colour | Yellowish to orange brown, when freshy cut, darkening to brown on exposure. |
| Hardness | Moderately hard to hard |
| Specific Gravity Based on Weight Over-dry and Volume Green | 0.68 |
| Weight | Moderately heavy |
| Weight(Kg)/cubic meter at 12% Moisture Content | 2230 |
| Texture | Medium coarse textured |
| Grain | Interlocked or sometime wavy grain |
| Growth Rings | Distinct |
| Porosity | Diffuse porous |
| Vessel Size | Vessels solitary and in radial multiples of two to three |
| Vessel Arrangement | solitary and in radial multiples of two to three, vessel outline circular. |
| Vessel Diameter | 130 - 260 180 |
| Vessel Element Lenght | 280 - 420 420 |
| Perforation | Simple |
| Pit Outline | Polygonal |
| Pit Size | Medium (8-10 µm),vestured. |
| Vessel Ray Pitting | Alternate and pit rounded in shape and vestured |
| Ray Nature | fine and numerous, closely spaced |
| Ray Arrangement/Type | Two to three seriate, homogeneous. |
| Ray Number | 4 - 6 |
| Ray Height | 200 - 460 300 |
| Fibre Walls | Thin to thick walled,non-septate with minutely bordered pits on both radial and tangential walls. |
| Fiber Length | |
| Modulus of Rupture in kg/cm2 (Green) | |
| Modulus of Elasticity in kg/cm2 (Green) | |
| Modulus of Rupture kg/cm2 (Dry) | |
| Modulus of Elasticity in kg/cm2 (Dry) | |
| Uses | Structural works, paneling, high- class joinery and furniture and constructional purposes. |
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