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238.0 Aluminum vs. Commercially Pure Silver

238.0 aluminum belongs to the aluminum alloys classification, while commercially pure silver belongs to the otherwise unclassified metals. There are 20 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 238.0 aluminum and the bottom bar is commercially pure silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
71
Elongation at Break, % 1.5
1.1 to 29
Poisson's Ratio 0.33
0.37
Shear Modulus, GPa 28
26
Tensile Strength: Ultimate (UTS), MPa 210
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 430
110
Melting Completion (Liquidus), °C 600
960
Melting Onset (Solidus), °C 510
960
Specific Heat Capacity, J/kg-K 840
240
Thermal Conductivity, W/m-K 100
420
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
100
Electrical Conductivity: Equal Weight (Specific), % IACS 67
87

Otherwise Unclassified Properties

Density, g/cm3 3.4
10

Common Calculations

Stiffness to Weight: Axial, points 12
3.8
Stiffness to Weight: Bending, points 42
13
Strength to Weight: Axial, points 17
4.9 to 8.9
Strength to Weight: Bending, points 23
6.9 to 10
Thermal Diffusivity, mm2/s 37
170
Thermal Shock Resistance, points 9.1
9.5 to 17

Alloy Composition


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Aluminum (Al), % 81.9 to 84.9
0
Copper (Cu), % 9.5 to 10.5
0
Iron (Fe), % 1.0 to 1.5
0
Magnesium (Mg), % 0 to 0.25
0
Silicon (Si), % 3.6 to 4.4
0
Silver (Ag), % 0
99.9 to 100
Zinc (Zn), % 1.0 to 1.5
0
Residuals, % 0
0 to 0.1