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EV31A Magnesium vs. SAE-AISI T5 Steel

EV31A magnesium belongs to the magnesium alloys classification, while SAE-AISI T5 steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (19, 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 T5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
210
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 260
860 to 2140

Thermal Properties

Melting Onset (Solidus), °C 590
1750
Specific Heat Capacity, J/kg-K 1000
410
Thermal Conductivity, W/m-K 86
21
Thermal Expansion, µm/m-K 27
11

Otherwise Unclassified Properties

Density, g/cm3 1.8
9.4

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 65
21
Strength to Weight: Axial, points 40
25 to 63
Strength to Weight: Bending, points 50
21 to 39
Thermal Diffusivity, mm2/s 47
5.5
Thermal Shock Resistance, points 16
26 to 66