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Grade 8 Babbitt Metal vs. SAE-AISI 8645 Steel

Grade 8 Babbitt Metal belongs to the otherwise unclassified metals classification, while SAE-AISI 8645 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 8 Babbitt Metal and the bottom bar is SAE-AISI 8645 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 24
190
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 8.5
73
Tensile Strength: Yield (Proof), MPa 23
390 to 560

Thermal Properties

Latent Heat of Fusion, J/g 46
250
Melting Completion (Liquidus), °C 270
1460
Melting Onset (Solidus), °C 240
1420
Specific Heat Capacity, J/kg-K 150
470
Thermal Conductivity, W/m-K 24
39
Thermal Expansion, µm/m-K 24
13

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.6
Density, g/cm3 10
7.8
Embodied Carbon, kg CO2/kg material 3.9
1.5
Embodied Energy, MJ/kg 53
20
Embodied Water, L/kg 840
50

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 11
420 to 840
Stiffness to Weight: Axial, points 1.3
13
Stiffness to Weight: Bending, points 9.2
24
Thermal Diffusivity, mm2/s 16
10

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
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 0.1
96.5 to 97.7
Lead (Pb), % 77.1 to 81.2
0
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0050
0