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Nickel Silver

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Nickel Silver

C7701 Chemical compositions 56Cu-18Ni-26Zn
Highlights Corrosion reistance, Spring toughness
Applications Quartz oscilator casings, Shield covers
C7521 Chemical compositions 64Cu-18Ni-18Zn
Highlights Corrosion reistance
Applications Quartz oscilator casings, Shield covers

See Chemical compositions and properties

Chemical compositions and properties

Copper Alloy Name Nickel Silver
C7521 C7701
Chemical Composition (wt%) Cu : 64.0
Zn : 18.0
Ni : 18.0
Cu : 56.0
Zn : 26.0
Ni : 18.0
Physical Properties Specific Gravity (g/cm3) 8.73 8.70
Modulus of Elasticity (MPa) 125,000 125,000
Electrical Conductivity (%IACS @20℃) 6 5
Poisson's Ratio 0.33 0.33
Mechanical Properties

*Standard specs.
Tensile Strength (MPa) O 375min -
1/4H - -
1/2H 440-570 540-655
H 540min 630-735
EH - 705-805
SH - 765-865
ESH - -
XSH - -
0.2% Yield Strength (MPa) O - -
1/4H - -
1/2H - -
H - -
EH - -
SH - -
ESH - -
XSH - -
Elongation (%) O 20min -
1/4H - -
1/2H 5min 8min
H 3min 4min
EH - -
SH - -
ESH - -
XSH - -
Vickers Hardness (Hv) O - -
1/4H - -
1/2H 120-180 150-210
H 150min 180-240
EH - 210-260
SH - 230-270
ESH - -
XSH - -
Bend Formability

*Badway90°W bend
Width=10mm data
Minimum Bend Radius / t Badway 1/2H - -
H - -
EH - -
SH - -
ESH - -