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EQ21A Magnesium vs. Titanium 6-2-4-2

EQ21A magnesium belongs to the magnesium alloys classification, while titanium 6-2-4-2 belongs to the titanium alloys. There are 29 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 EQ21A magnesium and the bottom bar is titanium 6-2-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.4
8.6
Fatigue Strength, MPa 110
490
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
40
Shear Strength, MPa 150
560
Tensile Strength: Ultimate (UTS), MPa 250
950
Tensile Strength: Yield (Proof), MPa 190
880

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
300
Melting Completion (Liquidus), °C 640
1590
Melting Onset (Solidus), °C 560
1540
Specific Heat Capacity, J/kg-K 980
540
Thermal Conductivity, W/m-K 110
6.9
Thermal Expansion, µm/m-K 27
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 80
42
Density, g/cm3 1.9
4.6
Embodied Carbon, kg CO2/kg material 27
32
Embodied Energy, MJ/kg 210
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
79
Resilience: Unit (Modulus of Resilience), kJ/m3 410
3640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
34
Strength to Weight: Axial, points 37
57
Strength to Weight: Bending, points 47
46
Thermal Diffusivity, mm2/s 62
2.8
Thermal Shock Resistance, points 15
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0.050 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.25
Magnesium (Mg), % 93.9 to 96.8
0
Molybdenum (Mo), % 0
1.8 to 2.2
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Silicon (Si), % 0
0.060 to 0.12
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 0
83.7 to 87.2
Unspecified Rare Earths, % 1.5 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
3.6 to 4.4
Residuals, % 0
0 to 0.4