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C67300 Bronze vs. C70620 Copper-nickel

Both C67300 bronze and C70620 copper-nickel are copper alloys. They have 62% 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 C67300 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 0.31
0.34
Rockwell B Hardness 91
65 to 87
Shear Modulus, GPa 41
46
Tensile Strength: Ultimate (UTS), MPa 500
300 to 570

Thermal Properties

Latent Heat of Fusion, J/g 190
220
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 870
1120
Melting Onset (Solidus), °C 830
1060
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 95
49
Thermal Expansion, µm/m-K 20
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
33
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 320
300

Common Calculations

Stiffness to Weight: Axial, points 7.4
7.7
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 17
9.3 to 18
Strength to Weight: Bending, points 17
11 to 17
Thermal Diffusivity, mm2/s 30
14
Thermal Shock Resistance, points 16
10 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 58 to 63
86.5 to 90
Iron (Fe), % 0 to 0.5
1.0 to 1.8
Lead (Pb), % 0.4 to 3.0
0 to 0.020
Manganese (Mn), % 2.0 to 3.5
0 to 1.0
Nickel (Ni), % 0 to 0.25
9.0 to 11
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 27.2 to 39.1
0 to 0.5
Residuals, % 0
0 to 0.5