Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. wood (plant material)
10. [wood by composition or origin]
11. hardwood
12. oak (wood)

Anotations

Scope note:

Wood of the species Quercus robur, having a coarse but straight grain that is usually a rich brown color. Flat sawn timber has a distinctive figuring while radial cut lumber has silver grain lines. The wood has a high gallic acid content that will corrode iron and other contacting metals. English oak is widely used in furniture, paneling, railway sleepers, cabinet, musical instruments, and ship building.