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EN 1.7108 Steel vs. EV31A Magnesium

EN 1.7108 steel belongs to the iron alloys classification, while EV31A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, 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 EN 1.7108 steel and the bottom bar is EV31A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 510
70
Elastic (Young's, Tensile) Modulus, GPa 190
44
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
17
Tensile Strength: Ultimate (UTS), MPa 670 to 2070
260

Thermal Properties

Maximum Temperature: Mechanical, °C 410
200
Melting Onset (Solidus), °C 1390
590
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 46
86
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
18
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
90

Otherwise Unclassified Properties

Density, g/cm3 7.7
1.8

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
65
Strength to Weight: Axial, points 24 to 75
40
Strength to Weight: Bending, points 22 to 47
50
Thermal Diffusivity, mm2/s 12
47
Thermal Shock Resistance, points 20 to 63
16