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Automotive Malleable Cast Iron vs. R05240 Alloy

Automotive malleable cast iron belongs to the iron alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is automotive malleable cast iron and the bottom bar is R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
150
Elongation at Break, % 1.0 to 10
25
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 70
57
Tensile Strength: Ultimate (UTS), MPa 350 to 720
270
Tensile Strength: Yield (Proof), MPa 220 to 590
170

Thermal Properties

Latent Heat of Fusion, J/g 260
210
Specific Heat Capacity, J/kg-K 480
190
Thermal Expansion, µm/m-K 14
6.8

Otherwise Unclassified Properties

Density, g/cm3 7.6
14
Embodied Water, L/kg 45
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
59
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
90
Stiffness to Weight: Axial, points 13
6.3
Stiffness to Weight: Bending, points 25
13
Strength to Weight: Axial, points 13 to 26
5.4
Strength to Weight: Bending, points 14 to 24
6.8
Thermal Shock Resistance, points 9.9 to 21
18

Alloy Composition

Carbon (C), % 2.2 to 2.9
0 to 0.010
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 93.6 to 96.7
0 to 0.010
Manganese (Mn), % 0.15 to 1.3
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
35 to 42
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.020
Phosphorus (P), % 0.020 to 0.15
0
Silicon (Si), % 0.9 to 1.9
0 to 0.0050
Sulfur (S), % 0.020 to 0.2
0
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050