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EN-MC35110 Magnesium vs. Automotive Grey Cast Iron

EN-MC35110 magnesium belongs to the magnesium alloys classification, while automotive grey cast iron belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 EN-MC35110 magnesium and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
160 to 280
Elastic (Young's, Tensile) Modulus, GPa 45
180
Elongation at Break, % 3.1
9.6 to 14
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
69 to 70
Tensile Strength: Ultimate (UTS), MPa 230
140 to 290
Tensile Strength: Yield (Proof), MPa 150
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 330
260 to 280
Melting Completion (Liquidus), °C 600
1380 to 1390
Melting Onset (Solidus), °C 520
1340 to 1350
Specific Heat Capacity, J/kg-K 970
490
Thermal Conductivity, W/m-K 110
41 to 43
Thermal Expansion, µm/m-K 26
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 18
1.9 to 3.0
Density, g/cm3 1.9
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 24
1.5 to 1.7
Embodied Energy, MJ/kg 170
21 to 24
Embodied Water, L/kg 940
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 260
25 to 110
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 34
5.2 to 11
Strength to Weight: Bending, points 44
8.0 to 13
Thermal Diffusivity, mm2/s 61
11 to 12
Thermal Shock Resistance, points 14
4.2 to 8.6