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Grade 23 Titanium vs. QE22A Magnesium

Grade 23 titanium belongs to the titanium alloys classification, while QE22A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, 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 grade 23 titanium and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
44
Elongation at Break, % 6.7 to 11
2.4
Fatigue Strength, MPa 470 to 500
110
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
17
Shear Strength, MPa 540 to 570
150
Tensile Strength: Ultimate (UTS), MPa 930 to 940
250
Tensile Strength: Yield (Proof), MPa 850 to 870
190

Thermal Properties

Latent Heat of Fusion, J/g 410
340
Maximum Temperature: Mechanical, °C 340
250
Melting Completion (Liquidus), °C 1610
640
Melting Onset (Solidus), °C 1560
570
Specific Heat Capacity, J/kg-K 560
970
Thermal Conductivity, W/m-K 7.1
110
Thermal Expansion, µm/m-K 9.4
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
120

Otherwise Unclassified Properties

Density, g/cm3 4.4
2.0
Embodied Carbon, kg CO2/kg material 38
27
Embodied Energy, MJ/kg 610
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61 to 100
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 3430 to 3560
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
60
Strength to Weight: Axial, points 58 to 59
36
Strength to Weight: Bending, points 48
46
Thermal Diffusivity, mm2/s 2.9
59
Thermal Shock Resistance, points 67 to 68
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.25
0
Magnesium (Mg), % 0
93.1 to 95.8
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.13
0
Silver (Ag), % 0
2.0 to 3.0
Titanium (Ti), % 88.1 to 91
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Vanadium (V), % 3.5 to 4.5
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3