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C64700 Bronze vs. C75700 Nickel Silver

Both C64700 bronze and C75700 nickel silver are copper alloys. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is C64700 bronze and the bottom bar is C75700 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 9.0
3.2 to 22
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 44
45
Shear Strength, MPa 390
350 to 370
Tensile Strength: Ultimate (UTS), MPa 660
590 to 610
Tensile Strength: Yield (Proof), MPa 560
470 to 580

Thermal Properties

Latent Heat of Fusion, J/g 220
200
Maximum Temperature: Mechanical, °C 200
180
Melting Completion (Liquidus), °C 1090
1040
Melting Onset (Solidus), °C 1030
990
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 210
40
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.6

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
19 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
930 to 1410
Stiffness to Weight: Axial, points 7.3
7.8
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 21
19 to 20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 59
12
Thermal Shock Resistance, points 24
22 to 23

Alloy Composition


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Copper (Cu), % 95.8 to 98
63.5 to 66.5
Iron (Fe), % 0 to 0.1
0 to 0.25
Lead (Pb), % 0 to 0.1
0 to 0.050
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 1.6 to 2.2
11 to 13
Silicon (Si), % 0.4 to 0.8
0
Zinc (Zn), % 0 to 0.5
19.2 to 25.5
Residuals, % 0 to 0.5
0 to 0.5