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C81500 Copper vs. ASTM B596 Au-Cu

C81500 copper belongs to the copper alloys classification, while ASTM B596 Au-Cu belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (12, 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 C81500 copper 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, % 17
4.3 to 17
Poisson's Ratio 0.34
0.41
Shear Modulus, GPa 44
36
Tensile Strength: Ultimate (UTS), MPa 350
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 210
77
Melting Completion (Liquidus), °C 1090
1060
Melting Onset (Solidus), °C 1080
930
Specific Heat Capacity, J/kg-K 390
150
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 82
14
Electrical Conductivity: Equal Weight (Specific), % IACS 83
6.7

Otherwise Unclassified Properties

Density, g/cm3 8.9
18

Common Calculations

Stiffness to Weight: Axial, points 7.3
3.1
Stiffness to Weight: Bending, points 18
8.5
Strength to Weight: Axial, points 11
6.8 to 9.4
Strength to Weight: Bending, points 12
7.1 to 8.8
Thermal Shock Resistance, points 12
22 to 30

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Chromium (Cr), % 0.4 to 1.5
0
Copper (Cu), % 97.4 to 99.6
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.020
0
Silicon (Si), % 0 to 0.15
0
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.4