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QE22A Magnesium vs. ASTM A204 Steel

QE22A magnesium belongs to the magnesium alloys classification, while ASTM A204 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 QE22A magnesium and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.4
18 to 22
Fatigue Strength, MPa 110
200 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 150
330 to 360
Tensile Strength: Ultimate (UTS), MPa 250
520 to 590
Tensile Strength: Yield (Proof), MPa 190
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 250
410
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 570
1420 to 1430
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
52
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.2

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.9
Embodied Carbon, kg CO2/kg material 27
1.5
Embodied Energy, MJ/kg 220
20

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
90 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 400
220 to 290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
24
Strength to Weight: Axial, points 36
18 to 21
Strength to Weight: Bending, points 46
18 to 20
Thermal Diffusivity, mm2/s 59
14
Thermal Shock Resistance, points 15
15 to 17