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C65400 Bronze vs. C74500 Nickel Silver

Both C65400 bronze and C74500 nickel silver are copper alloys. They have 65% of their average alloy composition in common.

For each property being compared, the top bar is C65400 bronze and the bottom bar is C74500 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 2.6 to 47
3.0 to 24
Poisson's Ratio 0.34
0.32
Rockwell B Hardness 82 to 120
66 to 94
Rockwell Superficial 30T Hardness 71 to 92
60 to 79
Shear Modulus, GPa 43
44
Shear Strength, MPa 350 to 530
310 to 380
Tensile Strength: Ultimate (UTS), MPa 500 to 1060
390 to 700
Tensile Strength: Yield (Proof), MPa 170 to 910
380 to 600

Thermal Properties

Latent Heat of Fusion, J/g 260
190
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1020
1020
Melting Onset (Solidus), °C 960
970
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 36
45
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
29
Density, g/cm3 8.7
8.3
Embodied Carbon, kg CO2/kg material 2.8
3.4
Embodied Energy, MJ/kg 45
54
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 480
12 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 3640
620 to 1540
Stiffness to Weight: Axial, points 7.3
7.7
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 16 to 34
13 to 23
Strength to Weight: Bending, points 16 to 27
14 to 21
Thermal Diffusivity, mm2/s 10
14
Thermal Shock Resistance, points 18 to 39
13 to 23

Alloy Composition

Chromium (Cr), % 0.010 to 0.12
0
Copper (Cu), % 93.8 to 96.1
63.5 to 66.5
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0 to 0.050
0 to 0.1
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
9.0 to 11
Silicon (Si), % 2.7 to 3.4
0
Tin (Sn), % 1.2 to 1.9
0
Zinc (Zn), % 0 to 0.5
21.2 to 27.5
Residuals, % 0
0 to 0.5

Comparable Variants