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ISO-WD32350 Magnesium vs. Austenitic Nodular Cast Iron

ISO-WD32350 magnesium belongs to the magnesium alloys classification, while austenitic nodular cast iron belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, 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 ISO-WD32350 magnesium and the bottom bar is austenitic nodular cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
180 to 190
Elongation at Break, % 5.7 to 10
6.8 to 34
Poisson's Ratio 0.29
0.29 to 0.3
Shear Modulus, GPa 18
70 to 72
Tensile Strength: Ultimate (UTS), MPa 250 to 290
430 to 500
Tensile Strength: Yield (Proof), MPa 140 to 180
190 to 240

Thermal Properties

Latent Heat of Fusion, J/g 340
280 to 350
Melting Completion (Liquidus), °C 600
1340 to 1400
Melting Onset (Solidus), °C 560
1300 to 1360
Specific Heat Capacity, J/kg-K 990
470 to 490
Thermal Expansion, µm/m-K 25
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16 to 25
Density, g/cm3 1.7
7.7 to 8.0
Embodied Carbon, kg CO2/kg material 23
3.5 to 4.9
Embodied Energy, MJ/kg 160
48 to 68
Embodied Water, L/kg 960
91 to 120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 23
24 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 380
98 to 160
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 68
24 to 25
Strength to Weight: Axial, points 39 to 46
15 to 18
Strength to Weight: Bending, points 50 to 55
16 to 18
Thermal Shock Resistance, points 16 to 18
12 to 15