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C74400 Nickel Silver vs. C64700 Bronze

Both C74400 nickel silver and C64700 bronze are copper alloys. They have 66% of their average alloy composition in common.

For each property being compared, the top bar is C74400 nickel silver and the bottom bar is C64700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 43
9.0
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 39
44
Shear Strength, MPa 240
390
Tensile Strength: Ultimate (UTS), MPa 350
660
Tensile Strength: Yield (Proof), MPa 120
560

Thermal Properties

Latent Heat of Fusion, J/g 180
220
Maximum Temperature: Mechanical, °C 140
200
Melting Completion (Liquidus), °C 930
1090
Melting Onset (Solidus), °C 910
1030
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
210
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
38
Electrical Conductivity: Equal Weight (Specific), % IACS 29
38

Otherwise Unclassified Properties

Base Metal Price, % relative 25
31
Density, g/cm3 8.2
8.9
Embodied Carbon, kg CO2/kg material 2.9
2.7
Embodied Energy, MJ/kg 48
43
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
57
Resilience: Unit (Modulus of Resilience), kJ/m3 63
1370
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 12
21
Strength to Weight: Bending, points 14
19
Thermal Diffusivity, mm2/s 37
59
Thermal Shock Resistance, points 12
24

Alloy Composition


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Copper (Cu), % 62 to 66
95.8 to 98
Iron (Fe), % 0 to 0.050
0 to 0.1
Lead (Pb), % 0 to 0.050
0 to 0.1
Nickel (Ni), % 2.0 to 4.0
1.6 to 2.2
Silicon (Si), % 0
0.4 to 0.8
Zinc (Zn), % 29.6 to 36
0 to 0.5
Residuals, % 0 to 0.3
0 to 0.5