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C75700 Nickel Silver vs. C70260 Copper

Both C75700 nickel silver and C70260 copper are copper alloys. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is C75700 nickel silver and the bottom bar is C70260 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 3.2 to 22
9.5 to 19
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 45
44
Shear Strength, MPa 350 to 370
320 to 450
Tensile Strength: Ultimate (UTS), MPa 590 to 610
520 to 760
Tensile Strength: Yield (Proof), MPa 470 to 580
410 to 650

Thermal Properties

Latent Heat of Fusion, J/g 200
220
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 1040
1060
Melting Onset (Solidus), °C 990
1040
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 40
160
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
40 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
40 to 51

Otherwise Unclassified Properties

Base Metal Price, % relative 30
31
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 3.6
2.7
Embodied Energy, MJ/kg 56
43
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 120
46 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 930 to 1410
710 to 1810
Stiffness to Weight: Axial, points 7.8
7.3
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 19 to 20
16 to 24
Strength to Weight: Bending, points 19
16 to 21
Thermal Diffusivity, mm2/s 12
45
Thermal Shock Resistance, points 22 to 23
18 to 27

Alloy Composition

Copper (Cu), % 63.5 to 66.5
95.8 to 98.8
Iron (Fe), % 0 to 0.25
0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 11 to 13
1.0 to 3.0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0.2 to 0.7
Zinc (Zn), % 19.2 to 25.5
0
Residuals, % 0 to 0.5
0 to 0.5