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ASTM B596 Au-Cu vs. CC212E Bronze

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while CC212E bronze belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (10, 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 ASTM B596 Au-Cu and the bottom bar is CC212E bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
130
Elongation at Break, % 4.3 to 17
20
Poisson's Ratio 0.41
0.34
Shear Modulus, GPa 36
47
Tensile Strength: Ultimate (UTS), MPa 450 to 620
710

Thermal Properties

Latent Heat of Fusion, J/g 77
230
Melting Completion (Liquidus), °C 1060
1080
Melting Onset (Solidus), °C 930
1020
Specific Heat Capacity, J/kg-K 150
440
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
3.3

Otherwise Unclassified Properties

Density, g/cm3 18
8.2

Common Calculations

Stiffness to Weight: Axial, points 3.1
8.5
Stiffness to Weight: Bending, points 8.5
20
Strength to Weight: Axial, points 6.8 to 9.4
24
Strength to Weight: Bending, points 7.1 to 8.8
21
Thermal Shock Resistance, points 22 to 30
22

Alloy Composition

Aluminum (Al), % 0
7.0 to 9.0
Copper (Cu), % 9.0 to 11
68 to 77
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
2.0 to 4.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
8.0 to 15
Nickel (Ni), % 0
1.5 to 4.5
Silicon (Si), % 0
0 to 0.1
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0 to 0.4
0