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C70600 Copper-nickel vs. ASTM B596 Au-Cu

C70600 copper-nickel belongs to the copper alloys classification, while ASTM B596 Au-Cu belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C70600 copper-nickel and the bottom bar is ASTM B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 3.0 to 34
4.3 to 17
Poisson's Ratio 0.34
0.41
Shear Modulus, GPa 46
36
Shear Strength, MPa 190 to 330
280 to 360
Tensile Strength: Ultimate (UTS), MPa 290 to 570
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 220
77
Melting Completion (Liquidus), °C 1150
1060
Melting Onset (Solidus), °C 1100
930
Specific Heat Capacity, J/kg-K 390
150
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
14
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
6.7

Otherwise Unclassified Properties

Density, g/cm3 8.9
18

Common Calculations

Stiffness to Weight: Axial, points 7.7
3.1
Stiffness to Weight: Bending, points 19
8.5
Strength to Weight: Axial, points 9.1 to 18
6.8 to 9.4
Strength to Weight: Bending, points 11 to 17
7.1 to 8.8
Thermal Shock Resistance, points 9.8 to 19
22 to 30

Alloy Composition

Copper (Cu), % 84.7 to 90
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 1.0 to 1.8
0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 9.0 to 11
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0
0 to 0.4