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C75700 Nickel Silver vs. C18600 Copper

Both C75700 nickel silver and C18600 copper are copper alloys. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is C75700 nickel silver and the bottom bar is C18600 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 3.2 to 22
8.0 to 11
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 45
44
Shear Strength, MPa 350 to 370
310 to 340
Tensile Strength: Ultimate (UTS), MPa 590 to 610
520 to 580
Tensile Strength: Yield (Proof), MPa 470 to 580
500 to 520

Thermal Properties

Latent Heat of Fusion, J/g 200
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 1040
1090
Melting Onset (Solidus), °C 990
1070
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 40
280
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
70
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
71

Otherwise Unclassified Properties

Base Metal Price, % relative 30
31
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 3.6
2.9
Embodied Energy, MJ/kg 56
46
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 120
44 to 58
Resilience: Unit (Modulus of Resilience), kJ/m3 930 to 1410
1060 to 1180
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 18
Strength to Weight: Bending, points 19
16 to 17
Thermal Diffusivity, mm2/s 12
81
Thermal Shock Resistance, points 22 to 23
19 to 20

Alloy Composition

Chromium (Cr), % 0
0.1 to 1.0
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 63.5 to 66.5
96.5 to 99.55
Iron (Fe), % 0 to 0.25
0.25 to 0.8
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 11 to 13
0 to 0.25
Titanium (Ti), % 0
0.050 to 0.5
Zinc (Zn), % 19.2 to 25.5
0
Zirconium (Zr), % 0
0.050 to 0.4
Residuals, % 0 to 0.5
0 to 0.5