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EZ33A Magnesium vs. ASTM A225 Steel

EZ33A magnesium belongs to the magnesium alloys classification, while ASTM A225 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 A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
190 to 250
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.6
21 to 23
Fatigue Strength, MPa 70
330 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 140
390 to 520
Tensile Strength: Ultimate (UTS), MPa 150
620 to 830
Tensile Strength: Yield (Proof), MPa 100
460 to 550

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 250
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 100
52
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.3
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 25
1.8
Embodied Energy, MJ/kg 190
24 to 25
Embodied Water, L/kg 930
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 120
580 to 820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 22
22 to 29
Strength to Weight: Bending, points 33
21 to 25
Thermal Diffusivity, mm2/s 54
14
Thermal Shock Resistance, points 9.2
18 to 24