Invention Grant
- Patent Title: Coinage alloy and processing for making coinage alloy
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Application No.: US15295206Application Date: 2016-10-17
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Publication No.: US10344366B2Publication Date: 2019-07-09
- Inventor: Eric A. Lass , Mark R. Stoudt , Carelyn Campbell , Tsineng Tony Ying
- Applicant: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
- Applicant Address: US DC Washington
- Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
- Current Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
- Current Assignee Address: US DC Washington
- Agency: Office of Chief Counsel for National Institute of Standards and Technology
- Main IPC: C22F1/08
- IPC: C22F1/08 ; C22C9/04 ; C22C1/02 ; B22D21/00

Abstract:
A coinage alloy for coinage includes nickel present in an amount from 13 wt. % to 16 wt. %, based on a total weight of the coinage alloy; zinc present in an amount from 25 wt. % to 32 wt. %, based on the total weight of the coinage alloy; manganese present in an amount from 1 wt. % to 4 wt. %, based on a total weight of the coinage alloy; copper; an electrical conductivity from 5% International Annealed Copper Standard (IACS) to 6% IACS; and a color comprising a yellowness vector b* that is from 5 to 10, based on a CIE L*a*b* color space and determined in accordance with ASTM Standard E308-15 (2015).
Public/Granted literature
- US20180105911A1 COINAGE ALLOY AND PROCESSING FOR MAKING COINAGE ALLOY Public/Granted day:2018-04-19
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