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Automotive Malleable Cast Iron vs. SAE-AISI M1 Steel

Both automotive malleable cast iron and SAE-AISI M1 steel are iron alloys. They have 84% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (8, 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 M1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 70
77
Tensile Strength: Ultimate (UTS), MPa 350 to 720
730 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1410
1560
Melting Onset (Solidus), °C 1370
1510
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 41
29
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
18
Density, g/cm3 7.6
8.1
Embodied Carbon, kg CO2/kg material 1.5
7.0
Embodied Energy, MJ/kg 20
99
Embodied Water, L/kg 45
98

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 13 to 26
25 to 73
Strength to Weight: Bending, points 14 to 24
22 to 45
Thermal Diffusivity, mm2/s 11
8.0
Thermal Shock Resistance, points 9.9 to 21
23 to 66

Alloy Composition

Carbon (C), % 2.2 to 2.9
0.78 to 0.88
Chromium (Cr), % 0
3.5 to 4.0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.6 to 96.7
81 to 84.8
Manganese (Mn), % 0.15 to 1.3
0.15 to 0.4
Molybdenum (Mo), % 0
8.2 to 9.2
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
0.2 to 0.5
Sulfur (S), % 0.020 to 0.2
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.0 to 1.4

Comparable Variants