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ISO-WD32250 Magnesium vs. Grade 8 Babbitt Metal

ISO-WD32250 magnesium belongs to the magnesium 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 ISO-WD32250 magnesium and the bottom bar is grade 8 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
24
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 17
8.5
Tensile Strength: Yield (Proof), MPa 240 to 290
23

Thermal Properties

Latent Heat of Fusion, J/g 340
46
Melting Completion (Liquidus), °C 600
270
Melting Onset (Solidus), °C 550
240
Specific Heat Capacity, J/kg-K 980
150
Thermal Conductivity, W/m-K 130
24
Thermal Expansion, µm/m-K 26
24

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 1.8
10
Embodied Carbon, kg CO2/kg material 24
3.9
Embodied Energy, MJ/kg 160
53
Embodied Water, L/kg 950
840

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
11
Stiffness to Weight: Axial, points 14
1.3
Stiffness to Weight: Bending, points 67
9.2
Thermal Diffusivity, mm2/s 72
16

Alloy Composition


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Aluminum (Al), % 0
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
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
77.1 to 81.2
Magnesium (Mg), % 94.9 to 97.1
0
Tin (Sn), % 0
4.5 to 5.5
Zinc (Zn), % 2.5 to 4.0
0 to 0.0050
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0