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Automotive Malleable Cast Iron vs. SAE-AISI A3 Steel

Both automotive malleable cast iron and SAE-AISI A3 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is SAE-AISI A3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 70
73
Tensile Strength: Ultimate (UTS), MPa 350 to 720
700 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 41
37
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
6.0
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 1.5
4.4
Embodied Energy, MJ/kg 20
67
Embodied Water, L/kg 45
78

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
25 to 77
Strength to Weight: Bending, points 14 to 24
23 to 48
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 9.9 to 21
23 to 70

Alloy Composition

Carbon (C), % 2.2 to 2.9
1.2 to 1.3
Chromium (Cr), % 0
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.6 to 96.7
88.7 to 92
Manganese (Mn), % 0.15 to 1.3
0.4 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0.020 to 0.15
0 to 0.030
Silicon (Si), % 0.9 to 1.9
0 to 0.5
Sulfur (S), % 0.020 to 0.2
0 to 0.030
Vanadium (V), % 0
0.8 to 1.4

Comparable Variants