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EZ33A Magnesium vs. ASTM A588 Steel

EZ33A magnesium belongs to the magnesium alloys classification, while ASTM A588 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 EZ33A magnesium and the bottom bar is ASTM A588 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
170
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.6
22
Fatigue Strength, MPa 70
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 140
350
Tensile Strength: Ultimate (UTS), MPa 150
550
Tensile Strength: Yield (Proof), MPa 100
390

Thermal Properties

Latent Heat of Fusion, J/g 330
250 to 260
Maximum Temperature: Mechanical, °C 250
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 570
1410 to 1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 100
43 to 44
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.3 to 2.5
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 25
1.5 to 1.6
Embodied Energy, MJ/kg 190
20 to 22
Embodied Water, L/kg 930
50 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
110
Resilience: Unit (Modulus of Resilience), kJ/m3 120
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 33
19
Thermal Diffusivity, mm2/s 54
12
Thermal Shock Resistance, points 9.2
16