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.

Mechanical Properties

Round Wire

Temper Name Temper Code Tensile Strength (N/mm²) Mill Limits
Min Max
Annealed   365 435 .0254 - 3.264 mm
1/4 Hard H01 470 580
1/2 Hard H02 570 670
Hard H04 685 765
Spring H08 725 0

Square Wire

Temper Name Temper Code Tensile Strength (N/mm²) Mill Limits
Min Max
Annealed   365 435 .2540 - 1.905 mm
1/4 Hard H01 470 580
1/2 Hard H02 570 670
Hard H04 685 765
Spring H08 725 0

Rolled Flat

Temper Name Temper Code Tensile Strength (N/mm²) Mill Limits
Min Max
Annealed   365 435

Thickness:
.2540 - 1.905 mm

Width: 

.3810 - 6.350 mm

1/4 Hard H01 400 495
1/2 Hard H02 455 550
3/4 Hard H03 510 595
Hard H04 540 625
Spring H08 620 695

Physical Properties

Melting Point (Liquidis) 1110°C
Melting Point (Solidus) 1071°C
Density 8.74696 gm/cu cm
Electrical Resistivity (Annealed) 28.76 ?? -cm @ 20°C
Electrical Conductivity (Annealed) 0.03513 MegaSiemens /cm @ 20°C
Thermal Conductivity (Solutionized-Aged) 32.9 W/m · °K @ 20°C
Coefficient of Thermal Expansion 0.0000162°C (20-300°C)
Modulus of Elasticity (Tension) 124100 MPa
Modulus of Rigidity 46900 MPa