Copper in architecture used in residential and commercial building structures. Variations in color stem primarily from differences in the alloy chemical composition. Some of the more popular copper alloys and their associated Unified Numbering System (UNS) numbers developed by ASTM and SAE are as follows: In practice, the term ‘bronze’ may be used for a variety of copper alloys with little or no tin if they resemble true bronzes in color. Further information on architectural copper alloys is available. The criteria by which copper and copper alloys are selected for architectural projects include color, strength, hardness, resistance to fatigue and corrosion, electrical and
Antimicrobial copper-alloy touch surfaces Copper (Cu) is a logo/mark required by the U.S. E.P.A. in order for bulk metal fabricators and manufacturing companies to make public health claims about antimicrobial copper in the U.S. market. The logo/mark indicates that the products have strong efficacies as sanitizers, residual self-sanitizing efficacies after multiple wet-dry cycles, and continuous reductions of bacterial contaminants. A list of bulk alloy suppliers that offer E.P.A.-registered antimicrobial copper to manufacturers is available. A list of approved manufacturers and retailers offering antimicrobial copper products to the regulated U.S. market is also available. These firms have completed all legal requirements to sell antimicrobial copper