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QE22A Magnesium vs. Grade 17 Titanium

QE22A magnesium belongs to the magnesium alloys classification, while grade 17 titanium belongs to the titanium alloys. There are 28 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 QE22A magnesium and the bottom bar is grade 17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.4
27
Fatigue Strength, MPa 110
160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
38
Shear Strength, MPa 150
180
Tensile Strength: Ultimate (UTS), MPa 250
270
Tensile Strength: Yield (Proof), MPa 190
210

Thermal Properties

Latent Heat of Fusion, J/g 340
420
Maximum Temperature: Mechanical, °C 250
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 570
1610
Specific Heat Capacity, J/kg-K 970
540
Thermal Conductivity, W/m-K 110
23
Thermal Expansion, µm/m-K 27
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.3

Otherwise Unclassified Properties

Density, g/cm3 2.0
4.5
Embodied Carbon, kg CO2/kg material 27
36
Embodied Energy, MJ/kg 220
600

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
68
Resilience: Unit (Modulus of Resilience), kJ/m3 400
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
35
Strength to Weight: Axial, points 36
17
Strength to Weight: Bending, points 46
21
Thermal Diffusivity, mm2/s 59
9.3
Thermal Shock Resistance, points 15
21

Alloy Composition


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Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.2
Magnesium (Mg), % 93.1 to 95.8
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.040 to 0.080
Silver (Ag), % 2.0 to 3.0
0
Titanium (Ti), % 0
99.015 to 99.96
Unspecified Rare Earths, % 1.8 to 2.5
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.4