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Automotive Malleable Cast Iron vs. SAE-AISI D4 Steel

Both automotive malleable cast iron and SAE-AISI D4 steel are iron alloys. They have 86% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 1.0 to 10
8.4 to 15
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 70
74
Tensile Strength: Ultimate (UTS), MPa 350 to 720
760 to 2060
Tensile Strength: Yield (Proof), MPa 220 to 590
470 to 1540

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 41
31
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
5.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
8.0
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 1.5
3.3
Embodied Energy, MJ/kg 20
49
Embodied Water, L/kg 45
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
100 to 160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 13 to 26
27 to 75
Strength to Weight: Bending, points 14 to 24
24 to 47
Thermal Diffusivity, mm2/s 11
8.3
Thermal Shock Resistance, points 9.9 to 21
23 to 63

Alloy Composition

Carbon (C), % 2.2 to 2.9
2.1 to 2.4
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.6 to 96.7
80.6 to 86.3
Manganese (Mn), % 0.15 to 1.3
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
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 to 0.6
Sulfur (S), % 0.020 to 0.2
0 to 0.030
Vanadium (V), % 0
0 to 1.0

Comparable Variants