CuNi12Zn24
MAILLECHORT
Cu63-66 Ni11-13 Zn reste Pb0.03 max
Chemical composition |
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Cu63-66
Ni11-13
ZnBAL
Pb0.03 max
Sn0.03 max
Fe0.3 max
Mn0.5 max
Other0.2 max
Alloy name | |
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RLSA no. | 400 |
EN standard | CW403J |
DIN standard | 2.0730 |
UNS no.* | C75700 |
*Unified Numbering System (USA)
Characteristics and main uses
CuNi12Zn24 is a nickel silver alloy which is alloyed with 12% nickel and 24% zinc. It is easy to cold-form and has particularly good deep-drawing properties. Like all copper materials, the copper-nickel-zinc alloys show no tendency to embrittlement at lower temperatures. The corrosion resistance of nickel silver is much better than that of binary copper-zinc alloys. NB12 is insensitive to stress corrosion cracking. NB12 is used for contacts, deep drawn parts and for optical goods. This alloy is registered with U.S. EPA as antimicrobia
Main uses
Coins, Caps for crystals, Electromagnetic shielding, Deep drawn parts, Tableware, Security keys, Cutlery, Contact springs, Connectors, Relay springs and Electrical contacts