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M20 C64200 Bronze vs. M20 C72500 Copper-nickel

Both M20 C64200 bronze and M20 C72500 copper-nickel are copper alloys. Both are furnished in the M20 (as hot rolled) condition. They have 88% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is M20 C64200 bronze and the bottom bar is M20 C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 42
45
Tensile Strength: Ultimate (UTS), MPa 540
420

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 210
210
Melting Completion (Liquidus), °C 1000
1130
Melting Onset (Solidus), °C 980
1060
Specific Heat Capacity, J/kg-K 430
390
Thermal Conductivity, W/m-K 45
54
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
11

Otherwise Unclassified Properties

Base Metal Price, % relative 29
35
Density, g/cm3 8.3
8.9
Embodied Carbon, kg CO2/kg material 3.0
3.6
Embodied Energy, MJ/kg 50
55
Embodied Water, L/kg 370
320

Common Calculations

Stiffness to Weight: Axial, points 7.5
7.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 18
13
Strength to Weight: Bending, points 18
14
Thermal Diffusivity, mm2/s 13
16
Thermal Shock Resistance, points 20
14

Alloy Composition

Aluminum (Al), % 6.3 to 7.6
0
Arsenic (As), % 0 to 0.15
0
Copper (Cu), % 88.2 to 92.2
85.2 to 89.7
Iron (Fe), % 0 to 0.3
0 to 0.6
Lead (Pb), % 0 to 0.050
0 to 0.050
Manganese (Mn), % 0 to 0.1
0 to 0.2
Nickel (Ni), % 0 to 0.25
8.5 to 10.5
Silicon (Si), % 1.5 to 2.2
0
Tin (Sn), % 0 to 0.2
1.8 to 2.8
Zinc (Zn), % 0 to 0.5
0 to 0.5
Residuals, % 0
0 to 0.2