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Grade 8 Babbitt Metal vs. ZK61A Magnesium

Grade 8 Babbitt Metal belongs to the otherwise unclassified metals classification, while ZK61A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, 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 grade 8 Babbitt Metal and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
46
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 8.5
18
Tensile Strength: Yield (Proof), MPa 23
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 46
330
Melting Completion (Liquidus), °C 270
640
Melting Onset (Solidus), °C 240
530
Specific Heat Capacity, J/kg-K 150
960
Thermal Conductivity, W/m-K 24
120
Thermal Expansion, µm/m-K 24
27

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 10
1.9
Embodied Carbon, kg CO2/kg material 3.9
23
Embodied Energy, MJ/kg 53
160
Embodied Water, L/kg 840
940

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 11
370 to 420
Stiffness to Weight: Axial, points 1.3
13
Stiffness to Weight: Bending, points 9.2
62
Thermal Diffusivity, mm2/s 16
65

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 14 to 16
0
Arsenic (As), % 0.3 to 0.6
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 0 to 0.5
0 to 0.1
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 77.1 to 81.2
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0050
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3