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AM60B Magnesium vs. Grade 7 Babbitt Metal

AM60B magnesium belongs to the magnesium alloys classification, while grade 7 Babbitt Metal belongs to the otherwise unclassified metals. There are 18 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 AM60B magnesium and the bottom bar is grade 7 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62
23
Elastic (Young's, Tensile) Modulus, GPa 45
26
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 17
9.1
Tensile Strength: Yield (Proof), MPa 130
25

Thermal Properties

Latent Heat of Fusion, J/g 350
48
Melting Completion (Liquidus), °C 620
270
Melting Onset (Solidus), °C 540
240
Specific Heat Capacity, J/kg-K 1000
150
Thermal Expansion, µm/m-K 26
26

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.7
10
Embodied Carbon, kg CO2/kg material 23
4.4
Embodied Energy, MJ/kg 160
62
Embodied Water, L/kg 990
880

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 190
12
Stiffness to Weight: Axial, points 15
1.4
Stiffness to Weight: Bending, points 71
9.6

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
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 to 0.010
0 to 0.5
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
71.9 to 76.4
Magnesium (Mg), % 92.6 to 94.3
0
Manganese (Mn), % 0.24 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
9.3 to 10.7
Zinc (Zn), % 0 to 0.22
0 to 0.0050