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7175 Aluminum vs. Grade 8 Babbitt Metal

7175 aluminum belongs to the aluminum alloys classification, while grade 8 Babbitt Metal belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 7175 aluminum and the bottom bar is grade 8 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
24
Poisson's Ratio 0.32
0.41
Shear Modulus, GPa 26
8.5
Tensile Strength: Yield (Proof), MPa 430 to 490
23

Thermal Properties

Latent Heat of Fusion, J/g 380
46
Melting Completion (Liquidus), °C 640
270
Melting Onset (Solidus), °C 480
240
Specific Heat Capacity, J/kg-K 870
150
Thermal Conductivity, W/m-K 140
24
Thermal Expansion, µm/m-K 23
24

Otherwise Unclassified Properties

Base Metal Price, % relative 10
19
Density, g/cm3 3.0
10
Embodied Carbon, kg CO2/kg material 8.2
3.9
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1130
840

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
11
Stiffness to Weight: Axial, points 13
1.3
Stiffness to Weight: Bending, points 46
9.2
Thermal Diffusivity, mm2/s 53
16

Alloy Composition

Aluminum (Al), % 88 to 91.4
0 to 0.0050
Antimony (Sb), % 0
14 to 16
Arsenic (As), % 0
0.3 to 0.6
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.050
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.5
Iron (Fe), % 0 to 0.2
0 to 0.1
Lead (Pb), % 0
77.1 to 81.2
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 0 to 0.15
0
Tin (Sn), % 0
4.5 to 5.5
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.1 to 6.1
0 to 0.0050
Residuals, % 0 to 0.15
0