Material note · Copper alloy
Bronze
A broad family of copper-based alloys valued in sculpture for castability, strength and varied surface color.
Where it appears
Cast reliefs, sculpture, plaques and hardware.
Limits to remember
Alloy composition matters; casting, joining and patination should be planned as one system.
Care principle
Document alloy and finish when known; use a care plan appropriate to indoor or outdoor exposure.
A note on identification
Color and texture alone do not prove composition. A real project should use documentation, suitable testing and a qualified professional when material identity affects safety, joining, conservation or structural use.
This page gives qualitative context. It does not state engineering values, certify compatibility or prescribe a treatment.
- Victoria and Albert Museum — Metalworking Techniques ↗
Museum-led context for forming, casting and decorating metal.
- Copper Development Association — Architectural Applications ↗
Reference on copper-alloy weathering, surface color and care.