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EV31A Magnesium vs. AWS ERTi-12

EV31A magnesium belongs to the magnesium alloys classification, while AWS ERTi-12 belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 AWS ERTi-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 3.5
12
Fatigue Strength, MPa 120
200
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 260
480
Tensile Strength: Yield (Proof), MPa 170
340

Thermal Properties

Maximum Temperature: Mechanical, °C 200
320
Melting Onset (Solidus), °C 590
1620
Specific Heat Capacity, J/kg-K 1000
540
Thermal Conductivity, W/m-K 86
21
Thermal Expansion, µm/m-K 27
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 90
7.1

Otherwise Unclassified Properties

Density, g/cm3 1.8
4.5

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
52
Resilience: Unit (Modulus of Resilience), kJ/m3 330
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 65
35
Strength to Weight: Axial, points 40
30
Strength to Weight: Bending, points 50
30
Thermal Diffusivity, mm2/s 47
8.7
Thermal Shock Resistance, points 16
37