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C91000 Bronze vs. C97400 Nickel Silver

Both C91000 bronze and C97400 nickel silver are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 64% of their average alloy composition in common.

For each property being compared, the top bar is C91000 bronze and the bottom bar is C97400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
70
Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 7.0
20
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 39
44
Tensile Strength: Ultimate (UTS), MPa 230
260
Tensile Strength: Yield (Proof), MPa 150
120

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 960
1100
Melting Onset (Solidus), °C 820
1070
Specific Heat Capacity, J/kg-K 360
380
Thermal Conductivity, W/m-K 64
27
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
33
Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 4.1
4.1
Embodied Energy, MJ/kg 67
64
Embodied Water, L/kg 420
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
43
Resilience: Unit (Modulus of Resilience), kJ/m3 100
59
Stiffness to Weight: Axial, points 6.8
7.5
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.5
8.5
Strength to Weight: Bending, points 9.7
11
Thermal Diffusivity, mm2/s 20
8.3
Thermal Shock Resistance, points 8.8
8.8

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 84 to 86
58 to 61
Iron (Fe), % 0 to 0.1
0 to 1.5
Lead (Pb), % 0 to 0.2
4.5 to 5.5
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.8
15.5 to 17
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 14 to 16
2.5 to 3.5
Zinc (Zn), % 0 to 1.5
10 to 19.5
Residuals, % 0
0 to 1.0