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ASTM A414 Steel vs. EN-MC21210 Magnesium

ASTM A414 steel belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. 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 ASTM A414 steel and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 180
48
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 15 to 26
14
Fatigue Strength, MPa 140 to 260
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Shear Strength, MPa 230 to 370
110
Tensile Strength: Ultimate (UTS), MPa 360 to 590
190
Tensile Strength: Yield (Proof), MPa 190 to 350
90

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Maximum Temperature: Mechanical, °C 400
100
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
570
Specific Heat Capacity, J/kg-K 470
1000
Thermal Conductivity, W/m-K 49 to 50
120
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.3
24
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3 to 8.4
130

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
12
Density, g/cm3 7.8 to 7.9
1.6
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
24
Embodied Energy, MJ/kg 20 to 22
160
Embodied Water, L/kg 48
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 130
22
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 330
92
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
72
Strength to Weight: Axial, points 13 to 21
32
Strength to Weight: Bending, points 14 to 20
44
Thermal Diffusivity, mm2/s 13
76
Thermal Shock Resistance, points 11 to 17
11