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EV31A Magnesium vs. SAE-AISI 1022 Steel

EV31A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1022 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, 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 EV31A magnesium and the bottom bar is SAE-AISI 1022 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
150 to 160
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 3.5
17 to 26
Fatigue Strength, MPa 120
190 to 300
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 170
310 to 340
Tensile Strength: Ultimate (UTS), MPa 260
480 to 550
Tensile Strength: Yield (Proof), MPa 170
260 to 450

Thermal Properties

Maximum Temperature: Mechanical, °C 200
400
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 86
52
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 90
8.0

Otherwise Unclassified Properties

Density, g/cm3 1.8
7.9

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
88 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 330
190 to 530
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 40
17 to 19
Strength to Weight: Bending, points 50
17 to 19
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 16
15 to 17