materials library / classes / metal
NEURODESIGN® · MATERIAL CLASS · METAL
Brass and bronze
Copper alloys, commonly specified unlacquered so that the surface patinates in use.
Decisive attributes
The attributes that most determine how this class behaves and how it is experienced. No values are shown, because a value belongs to a product and not to a class. Two products of the same material can differ from each other by more than the material differs from its neighbours.
Typical application
Hardware. Fittings. Trim.
Worth watching
Unlacquered brass is specified for a surface that changes under hand contact over time. No attribute in this taxonomy yet captures a property that is deliberately unstable.
Evidence
No record in the research corpus tests human response to this material class. Its physical behaviour may be well understood and its properties may be entirely predictable from the attributes above. That is a different thing from evidence that a person responds to it, and this library does not convert one into the other. The absence is shown rather than filled.
Outcomes it could bear on
Outcomes whose material levers overlap this class. This is a structural relationship in the ontology, not a finding: it says the property is relevant to the outcome, not that this material produces it.
- Autonomic downregulationvia Thermal effusivity
- Footing confidencevia Specular gloss
- Glare and visual comfortvia Specular gloss
- Perceived cleanlinessvia Specular gloss
- Perceived warmth of a spacevia Thermal effusivity
- Sleep onset and continuityvia Thermal effusivity
- Thermal comfort at contactvia Thermal effusivity