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C86700 Bronze vs. C72500 Copper-nickel

Both C86700 bronze and C72500 copper-nickel are copper alloys. They have 60% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C86700 bronze and the bottom bar is C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 41
45
Tensile Strength: Ultimate (UTS), MPa 630
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 180
210
Maximum Temperature: Mechanical, °C 130
210
Melting Completion (Liquidus), °C 880
1130
Melting Onset (Solidus), °C 860
1060
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 89
54
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
11
Electrical Conductivity: Equal Weight (Specific), % IACS 19
11

Otherwise Unclassified Properties

Base Metal Price, % relative 23
35
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 2.9
3.6
Embodied Energy, MJ/kg 49
55
Embodied Water, L/kg 340
320

Common Calculations

Stiffness to Weight: Axial, points 7.5
7.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 22
13 to 24
Strength to Weight: Bending, points 21
14 to 21
Thermal Diffusivity, mm2/s 28
16
Thermal Shock Resistance, points 21
14 to 27

Alloy Composition

Aluminum (Al), % 1.0 to 3.0
0
Copper (Cu), % 55 to 60
85.2 to 89.7
Iron (Fe), % 1.0 to 3.0
0 to 0.6
Lead (Pb), % 0.5 to 1.5
0 to 0.050
Manganese (Mn), % 1.0 to 3.5
0 to 0.2
Nickel (Ni), % 0 to 1.0
8.5 to 10.5
Tin (Sn), % 0 to 1.5
1.8 to 2.8
Zinc (Zn), % 30 to 38
0 to 0.5
Residuals, % 0
0 to 0.2