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ASTM A572 Steel vs. EZ33A Magnesium

ASTM A572 steel belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium 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 ASTM A572 steel and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 190
55
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 18 to 25
2.6
Fatigue Strength, MPa 240 to 340
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Shear Strength, MPa 300 to 380
140
Tensile Strength: Ultimate (UTS), MPa 470 to 620
150
Tensile Strength: Yield (Proof), MPa 330 to 510
100

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 400
250
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
570
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 51
100
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
24
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
25
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 1.6
25
Embodied Energy, MJ/kg 22
190
Embodied Water, L/kg 47
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 110
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 690
120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
61
Strength to Weight: Axial, points 17 to 22
22
Strength to Weight: Bending, points 17 to 21
33
Thermal Diffusivity, mm2/s 14
54
Thermal Shock Resistance, points 14 to 18
9.2