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EN AC-42200 Aluminum vs. Commercially Pure Palladium

EN AC-42200 aluminum belongs to the aluminum alloys classification, while commercially pure palladium 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-42200 aluminum and the bottom bar is commercially pure palladium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 3.0 to 6.7
1.1 to 11
Poisson's Ratio 0.33
0.39
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 320
200 to 380

Thermal Properties

Latent Heat of Fusion, J/g 500
160
Melting Completion (Liquidus), °C 610
1550
Melting Onset (Solidus), °C 600
1550
Specific Heat Capacity, J/kg-K 910
240
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
16
Electrical Conductivity: Equal Weight (Specific), % IACS 140
12

Otherwise Unclassified Properties

Density, g/cm3 2.6
12

Common Calculations

Stiffness to Weight: Axial, points 15
5.6
Stiffness to Weight: Bending, points 53
14
Strength to Weight: Axial, points 34 to 35
4.5 to 8.8
Strength to Weight: Bending, points 40 to 41
6.2 to 9.7
Thermal Shock Resistance, points 15
9.8 to 19

Alloy Composition

Aluminum (Al), % 91 to 93.1
0
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
0
Magnesium (Mg), % 0.45 to 0.7
0
Manganese (Mn), % 0 to 0.1
0
Palladium (Pd), % 0
99.8 to 100
Silicon (Si), % 6.5 to 7.5
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0
0 to 0.2