C752 Nickel Silver 18% Alloy Wire (CuNi18Zn20)

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Alloy C752 is an 18% nickel silver alloy combining corrosion resistance with strength and a lustrous silver color. Applications include optical frames and parts, springs, surgical instruments, jewelry, resistors and contacts.

English UnitsMetric Units

Mechanical Properties

Round Wire

Temper Name  Temper Code  Tensile Strength (ksi) Mill Limits 
Min Max
Annealed   53 63 .0010 - .1285 inch
1/4 Hard H01 68 84
1/2 Hard H02 83 97
Hard H04 99 111
Spring H08 105  

Square Wire

Temper Name  Temper Code  Tensile Strength (ksi) Mill Limits 
Min Max
Annealed   53 63 .0100 - .0808 inch
1/4 Hard H01 68 84
1/2 Hard H02 83 97
Hard H04 99 111
Spring H08 105  

Rolled Flat

Temper Name  Temper Code  Tensile Strength (ksi) Mill Limits 
Min Max
Annealed   53 63

Thickness:
.0100 - .0500 inch

Width:

.0150 - .2500 inch
1/4 Hard H01 58 72
1/2 Hard H02 66 80
3/4 Hard H03 74 86
Hard H04 78 91
Spring H08 90 101

Physical Properties

Melting Point (Liquidis) 2030°F
Melting Point (Solidus) 1960°F
Density 0.316 lbs/cu in
Electrical Resistivity (Annealed) 173 ?(cir mil/ft) @ 68°F
Electrical Conductivity (Annealed) 6% IACS @ 68°F
Thermal Conductivity (Solutionized-Aged) 19 Btu ft/sq ft hr °F @ 68°F
Coefficient of Thermal Expansion 0.000009°F (68-572°F)
Modulus of Elasticity (Tension) 18000 ksi
Modulus of Rigidity 6800 ksi

For a full size version of product specifications, including chemical composition in both US and Metric units, please download the PDF.