Nickel silver alloys contain copper, nickel and zinc in varying proportions. Nickel silver plates and strips have a pleasant silvery color, good malleability, good magnetism shield properties, high corrosion resistance and high elasticity. We mainly produce nickel silver strips C7701/CuNi18Zn27 and C7521/CuNi18Zn20.
*Chemical content of main elements:
| Material Name |
Serial Number. |
|
Cu |
Ni |
Zn |
|
JIS |
ASTM |
DIN |
|
Nickel Silver |
C7521 |
C75200 |
CuNi18Zn20 |
|
64.5-66.5 |
16.5-19.5 |
REM |
|
C7701 |
C77000 |
CuNi18Zn27 |
|
53.5-56.5 |
16.5-19.5 |
REM |
|
*Mechanical properties: |
|
|
Serial number |
Temper |
Tensile test |
Hardness test |
|
Thickness |
Tensile strength |
Elongation |
Thickness |
HV |
|
C7521 |
O |
0.03-1.2 |
≥375 |
≥20 |
--- |
--- |
|
1/2H |
440-570 |
≥5 |
≥0.03 |
120-180 |
|
H |
≥540 |
≥3 |
≥0.03 |
≥150 |
|
C7701 |
1/2H |
0.03-1.2 |
540-655 |
≥8 |
≥0.03 |
150-210 |
|
H |
|
630-735 |
≥4 |
≥0.03 |
180-240 |
|
EH |
|
705-805 |
--- |
≥0.03 |
210-260 |
|
SH |
|
765-865 |
--- |
--- |
230-270 |
Applications: High precision nickel silver strips used in making antenna, liquid crystal vibration device covers, shielding for mobile phones optical instrument silver ware jewellery, zippers and keys, musical instruments and coins etc.
 
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