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C92700 Bronze vs. C78200 Nickel Silver

Both C92700 bronze and C78200 nickel silver are copper alloys. They have 68% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C92700 bronze and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 9.1
3.0 to 40
Poisson's Ratio 0.34
0.32
Rockwell B Hardness 77
65 to 90
Shear Modulus, GPa 40
43
Tensile Strength: Ultimate (UTS), MPa 290
370 to 630
Tensile Strength: Yield (Proof), MPa 150
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 980
1000
Melting Onset (Solidus), °C 840
970
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 47
48
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
11
Electrical Conductivity: Equal Weight (Specific), % IACS 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 35
28
Density, g/cm3 8.7
8.4
Embodied Carbon, kg CO2/kg material 3.6
3.3
Embodied Energy, MJ/kg 58
52
Embodied Water, L/kg 390
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 110
130 to 1440
Stiffness to Weight: Axial, points 6.8
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.1
12 to 21
Strength to Weight: Bending, points 11
14 to 19
Thermal Diffusivity, mm2/s 15
15
Thermal Shock Resistance, points 11
12 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.25
0
Copper (Cu), % 86 to 89
63 to 67
Iron (Fe), % 0 to 0.2
0 to 0.35
Lead (Pb), % 1.0 to 2.5
1.5 to 2.5
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 1.0
7.0 to 9.0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0
Zinc (Zn), % 0 to 0.7
20.2 to 28.5
Residuals, % 0
0 to 0.5