The short answer
Both are rotary-cut veneer, both are plywood faces — but for different jobs. Okoume is lightness, birch is strength. The answer lies in what the panel will do:
- If weight decides — boat interiors, caravans, cabins, light doors — okoume.
- If strength decides — formwork plywood, furniture, chairs, flooring, structural panels — birch.
Reversing this is expensive in both directions: formwork made with okoume survives few pours, and a boat panel made with birch is needlessly heavy.
The two species side by side
| Okoume | Birch | |
|---|---|---|
| Botanical name | Aucoumea klaineana | Betula |
| Source | Gabon, Central Africa | Russia, Udmurtia |
| Density | 400–450 kg/m³ | 620–680 kg/m³ |
| Bending strength | roughly half of birch | 120–144 MPa |
| Hardness | soft, crushes easily | hard, wear-resistant |
| Screw holding | low | high |
| Colour | pinkish-brown | light, even |
| Sheet width | large logs, wide clean face | small knots, standard formats |
| Outdoors | needs a coating | needs a coating |
| Typical job | boats, caravans, light panels | formwork, furniture, flooring, chairs |
The density difference decides everything. At the same thickness an okoume panel is about a third lighter than a birch one — and carries proportionally less load.
Where okoume wins
Anywhere weight counts. Boat fit-outs, caravan and cabin panels, light door bodies, portable construction. In these jobs the panel does not carry load; it divides and clads, and every kilogram means fuel or transport cost. Okoume’s 400–450 kg/m³ is an advantage here, birch’s 620–680 a burden.
Wide clean faces. Gabon logs are large and straight; okoume veneer gives wider and less knotty sheets than birch. Where the visible surface must be one piece with a plain grain, this counts.
Where birch wins
Formwork plywood. A sheet stripped and reset, screwed and washed on every pour. Okoume crushes at that pace and its screw holes open up; a birch face works again and again. The detail: veneer for formwork plywood.
Furniture and chairs. Bending strength and screw holding decide; birch’s 120–144 MPa and hardness work here. In bent lamination birch veneer bends without breaking: bent lamination.
Flooring and structural panels. The outer plies do most of the work under load; density and bending strength translate directly into panel thickness — a thinner birch panel carries the same load.
Both in one panel
The combi build is open to either. The common Turkish solution is a birch face on a poplar core; okoume-faced combi is also made for interior panels where weight matters. The rule is the same: the species suited to the job in the visible, working layer, the cheap and light one in the core. The combi build itself: combi plywood. Birch against poplar is compared separately: birch or poplar.
Supply: Gabon against Russia
Beside the material difference there is a chain difference.
Okoume is processed in Gabon — log exports have been restricted for years, so veneer and plywood are made on site — and travels from there to Europe or directly to Turkey. A long sea route, a chain with many links, a price tied to African supply and the euro.
Birch comes from Russia: through Novorossiysk to the Marmara ports in 22–32 days, with no intermediaries, minimum lot one 40’HC container. Both are imported under HS 4408; for birch the process is set out step by step in the import guide.
How to compare the price
Per job, not per cubic metre. Okoume panel is light, so the same cubic metre holds more sheets — but each sheet survives fewer pours or carries less load. The right question is how many years, or how many pours, in this job. For formwork the life of birch more than covers the price difference; for a light interior panel okoume’s weight advantage is worth more than birch’s strength.
The current birch price and formats: price list. Birch as a wood — density, grain, drying behaviour — has its own page: birch wood properties.