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2011 Aluminum vs. ASTM B596 Au-Cu

2011 aluminum belongs to the aluminum 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 2011 aluminum and the bottom bar is ASTM B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
100
Elongation at Break, % 8.5 to 18
4.3 to 17
Poisson's Ratio 0.33
0.41
Shear Modulus, GPa 27
36
Shear Strength, MPa 190 to 250
280 to 360
Tensile Strength: Ultimate (UTS), MPa 310 to 420
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 390
77
Melting Completion (Liquidus), °C 640
1060
Melting Onset (Solidus), °C 540
930
Specific Heat Capacity, J/kg-K 870
150
Thermal Expansion, µm/m-K 23
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
14
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
6.7

Otherwise Unclassified Properties

Density, g/cm3 3.1
18

Common Calculations

Stiffness to Weight: Axial, points 13
3.1
Stiffness to Weight: Bending, points 44
8.5
Strength to Weight: Axial, points 27 to 37
6.8 to 9.4
Strength to Weight: Bending, points 32 to 40
7.1 to 8.8
Thermal Shock Resistance, points 14 to 19
22 to 30

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
0
Bismuth (Bi), % 0.2 to 0.6
0
Copper (Cu), % 5.0 to 6.0
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 0 to 0.7
0
Lead (Pb), % 0.2 to 0.6
0
Silicon (Si), % 0 to 0.4
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0
0 to 0.4