“Based on the response from coin industry stakeholders, the estimated industry cost ($2.4 billion to $6 billion) to accommodate an alternative metal for circulating coins that incorporates a change to the weight or EMS

[electromagnetic signature] characteristics far exceeds the estimated annual government savings ($46 million to $57 million),” the report concluded…

Taken from:
U.S. Mint Report Recommends No Change To Composition Of Coins