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Austempered Cast Iron vs. Grade 7 Babbitt Metal

Austempered cast iron belongs to the iron 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 (9, in this case) are not shown.

For each property being compared, the top bar is austempered cast iron and the bottom bar is grade 7 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 490
23
Elastic (Young's, Tensile) Modulus, GPa 180
26
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 62 to 69
9.1
Tensile Strength: Yield (Proof), MPa 560 to 1460
25

Thermal Properties

Latent Heat of Fusion, J/g 280
48
Melting Completion (Liquidus), °C 1380
270
Melting Onset (Solidus), °C 1340
240
Specific Heat Capacity, J/kg-K 490
150
Thermal Expansion, µm/m-K 13
26

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
23
Density, g/cm3 7.5
10
Embodied Carbon, kg CO2/kg material 1.8
4.4
Embodied Energy, MJ/kg 25
62
Embodied Water, L/kg 48
880

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 3970
12
Stiffness to Weight: Axial, points 13
1.4
Stiffness to Weight: Bending, points 25
9.6

Alloy Composition

Aluminum (Al), % 0 to 0.050
0 to 0.0050
Antimony (Sb), % 0
14 to 16
Arsenic (As), % 0 to 0.020
0.3 to 0.6
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 3.4 to 3.8
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.8
0 to 0.5
Iron (Fe), % 89.6 to 94
0 to 0.1
Lead (Pb), % 0
71.9 to 76.4
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 2.0
0
Phosphorus (P), % 0 to 0.040
0
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0 to 0.020
9.3 to 10.7
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 0
0 to 0.0050