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C87700 Bronze vs. C71640 Copper-nickel

Both C87700 bronze and C71640 copper-nickel are copper alloys. They have 66% of their average alloy composition in common. There are 26 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 C87700 bronze and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 42
52
Tensile Strength: Ultimate (UTS), MPa 300
490 to 630
Tensile Strength: Yield (Proof), MPa 120
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 180
260
Melting Completion (Liquidus), °C 980
1180
Melting Onset (Solidus), °C 900
1120
Specific Heat Capacity, J/kg-K 400
410
Thermal Conductivity, W/m-K 120
29
Thermal Expansion, µm/m-K 18
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 48
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 29
40
Density, g/cm3 8.5
8.9
Embodied Carbon, kg CO2/kg material 2.7
5.0
Embodied Energy, MJ/kg 45
73
Embodied Water, L/kg 310
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 64
130 to 750
Stiffness to Weight: Axial, points 7.4
8.7
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 9.8
15 to 20
Strength to Weight: Bending, points 12
16 to 18
Thermal Diffusivity, mm2/s 34
8.2
Thermal Shock Resistance, points 11
16 to 21

Alloy Composition

Antimony (Sb), % 0 to 0.1
0
Copper (Cu), % 87.5 to 90.5
61.7 to 67.8
Iron (Fe), % 0 to 0.5
1.7 to 2.3
Lead (Pb), % 0 to 0.090
0 to 0.050
Manganese (Mn), % 0 to 0.8
1.5 to 2.5
Nickel (Ni), % 0 to 0.25
29 to 32
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 2.5 to 3.5
0
Tin (Sn), % 0 to 2.0
0
Zinc (Zn), % 7.0 to 9.0
0 to 1.0
Residuals, % 0
0 to 0.5