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4045 Aluminum vs. Commercially Pure Silver

4045 aluminum belongs to the aluminum alloys classification, while commercially pure silver belongs to the otherwise unclassified metals. There are 21 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 4045 aluminum and the bottom bar is commercially pure silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
71
Elongation at Break, % 2.3
1.1 to 29
Poisson's Ratio 0.33
0.37
Shear Modulus, GPa 27
26
Shear Strength, MPa 69
120 to 190
Tensile Strength: Ultimate (UTS), MPa 120
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 540
110
Melting Completion (Liquidus), °C 600
960
Melting Onset (Solidus), °C 580
960
Specific Heat Capacity, J/kg-K 900
240
Thermal Conductivity, W/m-K 170
420
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
100
Electrical Conductivity: Equal Weight (Specific), % IACS 160
87

Otherwise Unclassified Properties

Density, g/cm3 2.6
10

Common Calculations

Stiffness to Weight: Axial, points 15
3.8
Stiffness to Weight: Bending, points 54
13
Strength to Weight: Axial, points 13
4.9 to 8.9
Strength to Weight: Bending, points 21
6.9 to 10
Thermal Diffusivity, mm2/s 74
170
Thermal Shock Resistance, points 5.7
9.5 to 17

Alloy Composition

Aluminum (Al), % 87.4 to 91
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0
Silicon (Si), % 9.0 to 11
0
Silver (Ag), % 0
99.9 to 100
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.1