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QE22A Magnesium vs. Grade 4 Titanium

QE22A magnesium belongs to the magnesium alloys classification, while grade 4 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 4 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
200
Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.4
17
Fatigue Strength, MPa 110
340
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
41
Shear Strength, MPa 150
390
Tensile Strength: Ultimate (UTS), MPa 250
640
Tensile Strength: Yield (Proof), MPa 190
530

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
19
Thermal Expansion, µm/m-K 27
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
6.3

Otherwise Unclassified Properties

Density, g/cm3 2.0
4.5
Embodied Carbon, kg CO2/kg material 27
31
Embodied Energy, MJ/kg 220
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
100
Resilience: Unit (Modulus of Resilience), kJ/m3 400
1330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
35
Strength to Weight: Axial, points 36
40
Strength to Weight: Bending, points 46
37
Thermal Diffusivity, mm2/s 59
7.6
Thermal Shock Resistance, points 15
46

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 0.5
Magnesium (Mg), % 93.1 to 95.8
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.4
Silver (Ag), % 2.0 to 3.0
0
Titanium (Ti), % 0
98.6 to 100
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