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Austenitic Nodular Cast Iron vs. QE22A Magnesium

Austenitic nodular cast iron belongs to the iron alloys classification, while QE22A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is austenitic nodular cast iron and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 240
80
Elastic (Young's, Tensile) Modulus, GPa 180 to 190
44
Elongation at Break, % 6.8 to 34
2.4
Poisson's Ratio 0.29 to 0.3
0.29
Shear Modulus, GPa 70 to 72
17
Tensile Strength: Ultimate (UTS), MPa 430 to 500
250
Tensile Strength: Yield (Proof), MPa 190 to 240
190

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
340
Melting Completion (Liquidus), °C 1340 to 1400
640
Melting Onset (Solidus), °C 1300 to 1360
570
Specific Heat Capacity, J/kg-K 470 to 490
970
Thermal Expansion, µm/m-K 13 to 14
27

Otherwise Unclassified Properties

Density, g/cm3 7.7 to 8.0
2.0
Embodied Carbon, kg CO2/kg material 3.5 to 4.9
27
Embodied Energy, MJ/kg 48 to 68
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 140
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 98 to 160
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24 to 25
60
Strength to Weight: Axial, points 15 to 18
36
Strength to Weight: Bending, points 16 to 18
46
Thermal Shock Resistance, points 12 to 15
15