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C87600 Bronze vs. C97800 Nickel Silver

Both C87600 bronze and C97800 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is C87600 bronze and the bottom bar is C97800 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Elongation at Break, % 18
10
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 42
48
Tensile Strength: Ultimate (UTS), MPa 470
370
Tensile Strength: Yield (Proof), MPa 230
170

Thermal Properties

Latent Heat of Fusion, J/g 280
220
Maximum Temperature: Mechanical, °C 190
230
Melting Completion (Liquidus), °C 970
1180
Melting Onset (Solidus), °C 860
1140
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 28
25
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.0
4.0
Electrical Conductivity: Equal Weight (Specific), % IACS 6.4
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 29
40
Density, g/cm3 8.5
8.8
Embodied Carbon, kg CO2/kg material 2.7
5.1
Embodied Energy, MJ/kg 43
76
Embodied Water, L/kg 300
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
31
Resilience: Unit (Modulus of Resilience), kJ/m3 240
120
Stiffness to Weight: Axial, points 7.4
8.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 16
12
Strength to Weight: Bending, points 16
13
Thermal Diffusivity, mm2/s 8.1
7.3
Thermal Shock Resistance, points 17
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 88 to 92.5
64 to 67
Iron (Fe), % 0
0 to 1.5
Lead (Pb), % 0 to 0.5
1.0 to 2.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 3.5 to 5.5
0 to 0.15
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 5.5
Zinc (Zn), % 4.0 to 7.0
1.0 to 4.0
Residuals, % 0
0 to 0.4