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4145 Aluminum vs. Grade 7 Babbitt Metal

4145 aluminum belongs to the aluminum alloys classification, while grade 7 Babbitt Metal belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (16, 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 4145 aluminum and the bottom bar is grade 7 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
26
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 28
9.1
Tensile Strength: Yield (Proof), MPa 68
25

Thermal Properties

Latent Heat of Fusion, J/g 540
48
Melting Completion (Liquidus), °C 590
270
Melting Onset (Solidus), °C 520
240
Specific Heat Capacity, J/kg-K 880
150
Thermal Expansion, µm/m-K 21
26

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 2.8
10
Embodied Carbon, kg CO2/kg material 7.6
4.4
Embodied Energy, MJ/kg 140
62
Embodied Water, L/kg 1040
880

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 31
12
Stiffness to Weight: Axial, points 14
1.4
Stiffness to Weight: Bending, points 50
9.6

Alloy Composition

Aluminum (Al), % 83 to 87.4
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 to 0.15
0
Copper (Cu), % 3.3 to 4.7
0 to 0.5
Iron (Fe), % 0 to 0.8
0 to 0.1
Lead (Pb), % 0
71.9 to 76.4
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 9.3 to 10.7
0
Tin (Sn), % 0
9.3 to 10.7
Zinc (Zn), % 0 to 0.2
0 to 0.0050
Residuals, % 0 to 0.15
0