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EN AC-51500 Aluminum vs. ASTM B477 Au-Ni-Ag

EN AC-51500 aluminum belongs to the aluminum alloys classification, while ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, 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 EN AC-51500 aluminum and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
95
Elongation at Break, % 5.6
5.5 to 11
Poisson's Ratio 0.33
0.41
Shear Modulus, GPa 26
34
Tensile Strength: Ultimate (UTS), MPa 280
310 to 550

Thermal Properties

Latent Heat of Fusion, J/g 430
80
Melting Completion (Liquidus), °C 630
1010
Melting Onset (Solidus), °C 590
930
Specific Heat Capacity, J/kg-K 910
160
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
14
Electrical Conductivity: Equal Weight (Specific), % IACS 88
7.5

Otherwise Unclassified Properties

Density, g/cm3 2.6
17

Common Calculations

Stiffness to Weight: Axial, points 14
3.1
Stiffness to Weight: Bending, points 52
8.9
Strength to Weight: Axial, points 29
5.0 to 9.0
Strength to Weight: Bending, points 36
6.0 to 8.8
Thermal Shock Resistance, points 13
16 to 28

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0
74.2 to 75.8
Iron (Fe), % 0 to 0.25
0
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0
Nickel (Ni), % 0
2.6 to 3.4
Silicon (Si), % 1.8 to 2.6
0
Silver (Ag), % 0
21.4 to 22.6
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0
0 to 0.3