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EN-MC21230 Magnesium vs. ASTM A216 Cast Steel

EN-MC21230 magnesium belongs to the magnesium alloys classification, while ASTM A216 cast steel belongs to the iron alloys. There are 29 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-MC21230 magnesium and the bottom bar is ASTM A216 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 10
25 to 27
Fatigue Strength, MPa 99
170 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Tensile Strength: Ultimate (UTS), MPa 220
500 to 570
Tensile Strength: Yield (Proof), MPa 140
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 600
1450 to 1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 72
49 to 52
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.1 to 7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 63
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 990
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
140 to 250
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 36
18 to 20
Strength to Weight: Bending, points 48
18 to 20
Thermal Diffusivity, mm2/s 43
13 to 14
Thermal Shock Resistance, points 13
16 to 18