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C64210 Bronze vs. C70620 Copper-nickel

Both C64210 bronze and C70620 copper-nickel are copper alloys. They have 89% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C64210 bronze and the bottom bar is C70620 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.34
0.34
Rockwell B Hardness 77
65 to 87
Shear Modulus, GPa 42
46
Tensile Strength: Ultimate (UTS), MPa 570
300 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 210
220
Melting Completion (Liquidus), °C 1040
1120
Melting Onset (Solidus), °C 990
1060
Specific Heat Capacity, J/kg-K 430
390
Thermal Conductivity, W/m-K 48
49
Thermal Expansion, µm/m-K 18
17

Otherwise Unclassified Properties

Base Metal Price, % relative 29
33
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 49
51
Embodied Water, L/kg 360
300

Common Calculations

Stiffness to Weight: Axial, points 7.4
7.7
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 19
9.3 to 18
Strength to Weight: Bending, points 18
11 to 17
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 21
10 to 20

Alloy Composition

Aluminum (Al), % 6.3 to 7.0
0
Arsenic (As), % 0 to 0.15
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 89 to 92.2
86.5 to 90
Iron (Fe), % 0 to 0.3
1.0 to 1.8
Lead (Pb), % 0 to 0.050
0 to 0.020
Manganese (Mn), % 0 to 0.1
0 to 1.0
Nickel (Ni), % 0 to 0.25
9.0 to 11
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 1.5 to 2.0
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0 to 0.5
Residuals, % 0
0 to 0.5