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C31400 Bronze vs. C74400 Nickel Silver

Both C31400 bronze and C74400 nickel silver are copper alloys. They have 73% of their average alloy composition in common.

For each property being compared, the top bar is C31400 bronze and the bottom bar is C74400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.8 to 29
43
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
39
Shear Strength, MPa 180 to 240
240
Tensile Strength: Ultimate (UTS), MPa 270 to 420
350
Tensile Strength: Yield (Proof), MPa 78 to 310
120

Thermal Properties

Latent Heat of Fusion, J/g 200
180
Maximum Temperature: Mechanical, °C 180
140
Melting Completion (Liquidus), °C 1040
930
Melting Onset (Solidus), °C 1010
910
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 180
120
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
26
Electrical Conductivity: Equal Weight (Specific), % IACS 43
29

Otherwise Unclassified Properties

Base Metal Price, % relative 29
25
Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 42
48
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
120
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
63
Stiffness to Weight: Axial, points 7.1
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.7 to 13
12
Strength to Weight: Bending, points 11 to 14
14
Thermal Diffusivity, mm2/s 54
37
Thermal Shock Resistance, points 9.6 to 15
12

Alloy Composition

Copper (Cu), % 87.5 to 90.5
62 to 66
Iron (Fe), % 0 to 0.1
0 to 0.050
Lead (Pb), % 1.3 to 2.5
0 to 0.050
Nickel (Ni), % 0 to 0.7
2.0 to 4.0
Zinc (Zn), % 5.8 to 11.2
29.6 to 36
Residuals, % 0
0 to 0.3