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EN-MC32110 Magnesium vs. ASTM A299 Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ASTM A299 steel belongs to the iron 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 EN-MC32110 magnesium and the bottom bar is ASTM A299 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
21 to 22
Fatigue Strength, MPa 80
230 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Shear Strength, MPa 120
370 to 390
Tensile Strength: Ultimate (UTS), MPa 220
590 to 620
Tensile Strength: Yield (Proof), MPa 140
330 to 360

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 99
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
51
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.9
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 920
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
110
Resilience: Unit (Modulus of Resilience), kJ/m3 210
290 to 350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
21 to 22
Strength to Weight: Bending, points 38
20 to 21
Thermal Diffusivity, mm2/s 58
14
Thermal Shock Resistance, points 12
17 to 18