Ayous
Botanical name
Triplochiton scleroxylon
Origin
Africa
Other names
Xwetin, Ayus, Samba, Wawa, Obeche, M'bado, Eguess, Arere, Bado, Abachi
WOOD DESCRIPTION
| Color: |
light yellow |
| Sapwood: |
not demarcated |
| Texture: |
medium |
| Grain: |
straight or interlocked |
| Interlocked grain: |
slight |
| Note: |
Black holes, brittleheart, ring shakes and grub holes in some logs. Yellowish white to light yellow, heartwood sometimes darker. Ribbon like aspect on quartersawn. Grain sometimes irregular. |
PHYSICAL, MECHANICAL AND ACOUSTIC PROPERTIES
|
(*: at 12% moisture content, with 1 MPa = 1 N/mm²) Musical quality factor: 111,2 measured at 2468 Hz |
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NATURAL DURABILITY AND TREATABILITY
| Funghi (according to E.N. standards): |
class 5 - not durable |
| Dry wood borers: |
susceptible - sapwood not or slightly demarcated (risk in all the wood) |
| Termites (according to E.N. standards): |
class S - susceptible |
| Treatability (according to E.N. standards): |
class 3 - poorly permeable |
| Use class ensured by natural durability: |
class 1 - inside (no dampness) |
| Species covering the use class 5: |
No |
| Note: |
This species is listed in the European standard NF EN 350-2. Poorly to moderately permeable to preservative treatment. Prone to blue stain and dote. |
SAWING, MACHINING AND ASSEMBLING
| Blunting effect: |
normal |
| Sawteeth recommended: |
ordinary or alloy steel |
| Cutting tools: |
ordinary |
| Peeling: |
good |
| Slicing: |
nood |
| Note: | Tends to crumble when machining end grain and tends to tear in mortising (it is recommended to keep sharp edges and to reduce the cutting angle). Filling recommended. |
| Nailing / screwing: |
poor |
| Gluing: |
correct |
| Note: |
Gluing must be done carefully: absorbent wood |
