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7178 Aluminum vs. Commercially Pure Silver

7178 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 (9, 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 7178 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, % 4.5 to 12
1.1 to 29
Poisson's Ratio 0.32
0.37
Shear Modulus, GPa 27
26
Shear Strength, MPa 140 to 380
120 to 190
Tensile Strength: Ultimate (UTS), MPa 240 to 640
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 370
110
Melting Completion (Liquidus), °C 630
960
Melting Onset (Solidus), °C 480
960
Specific Heat Capacity, J/kg-K 860
240
Thermal Conductivity, W/m-K 130
420
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
100
Electrical Conductivity: Equal Weight (Specific), % IACS 91
87

Otherwise Unclassified Properties

Density, g/cm3 3.1
10

Common Calculations

Stiffness to Weight: Axial, points 13
3.8
Stiffness to Weight: Bending, points 45
13
Strength to Weight: Axial, points 21 to 58
4.9 to 8.9
Strength to Weight: Bending, points 28 to 54
6.9 to 10
Thermal Diffusivity, mm2/s 47
170
Thermal Shock Resistance, points 10 to 28
9.5 to 17

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
0
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
99.9 to 100
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0
0 to 0.1

Comparable Variants