CuNi18Zn27
MAILLECHORT
Cu53-56 Ni17-19 Zn reste Pb0.03 max
Chemical composition |
---|
Cu53-56
Ni17-19
ZnBAL
Pb0.03 max
Sn0.03 max
Fe0.3 max
Mn0.5 max
Other0.2 max
Alloy name | |
---|---|
RLSA no. | 455 |
EN standard | CW410J |
DIN standard | 2.0742 |
UNS no.* | C77000 |
*Unified Numbering System (USA)
Characteristics and main uses
CuNi18Zn27 is a nickel-silver alloy, alloyed with 18% nickel and 27% zinc. It exhibits good work hardening properties, resists tarnishing and has particularly good spring properties. Like all copper materials, copper-nickel-zinc alloys show no tendency to embrittlement at low temperatures. The corrosion resistance of nickel silver is much better than that of binary copper-zinc alloys. CuNi18Zn27 is insensitive to stress corrosion cracking. CuNi18Zn27 is used for contact springs in relays, shields and jewelry.
Main uses
Coins, Caps for crystals, Electromagnetic shielding, Deep drawn parts, Tableware, Security keys, Cutlery, Contact springs, Connectors, Relay springs and Electrical contacts