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EN-MC21210 Magnesium vs. ASTM A27 Cast Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while ASTM A27 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-MC21210 magnesium and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
25 to 27
Fatigue Strength, MPa 70
170 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 190
460 to 550
Tensile Strength: Yield (Proof), MPa 90
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 100
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 980
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 92
140 to 260
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
16 to 20
Strength to Weight: Bending, points 44
17 to 19
Thermal Diffusivity, mm2/s 76
14
Thermal Shock Resistance, points 11
15 to 18