Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. metal
8. [metal by composition or origin]
9. nonferrous metal
10. [copper and copper alloy]
11. copper alloy
12. bronze (metal)

Anotations

Scope note:

Casting bronze, of from 10 to 15% tin, about 2% zinc, and the balance copper; formerly used for making cannon barrels, and later also for a variety of machine components and other devices. Also any of several metals or alloys of a dark bluish or purplish gray, used to make firearm barrels and other objects.