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QE22A Magnesium vs. ASTM A732 Cast Steel

QE22A magnesium belongs to the magnesium alloys classification, while ASTM A732 cast steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
140 to 440
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.4
4.0 to 25
Fatigue Strength, MPa 110
230 to 750
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72 to 73
Tensile Strength: Ultimate (UTS), MPa 250
460 to 1470
Tensile Strength: Yield (Proof), MPa 190
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 340
250 to 260
Maximum Temperature: Mechanical, °C 250
400 to 430
Melting Completion (Liquidus), °C 640
1440 to 1460
Melting Onset (Solidus), °C 570
1400 to 1420
Specific Heat Capacity, J/kg-K 970
470 to 480
Thermal Conductivity, W/m-K 110
39 to 50
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.2 to 8.9

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 27
1.4 to 1.7
Embodied Energy, MJ/kg 220
19 to 24

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 400
260 to 4770
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
24
Strength to Weight: Axial, points 36
16 to 52
Strength to Weight: Bending, points 46
17 to 37
Thermal Diffusivity, mm2/s 59
10 to 14
Thermal Shock Resistance, points 15
14 to 43