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Grade 9 Titanium vs. WE54A Magnesium

Grade 9 titanium belongs to the titanium alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 9 titanium and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
44
Elongation at Break, % 11 to 17
4.3 to 5.6
Fatigue Strength, MPa 330 to 480
98 to 130
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
17
Shear Strength, MPa 430 to 580
150 to 170
Tensile Strength: Ultimate (UTS), MPa 700 to 960
270 to 300
Tensile Strength: Yield (Proof), MPa 540 to 830
180

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 330
170
Melting Completion (Liquidus), °C 1640
640
Melting Onset (Solidus), °C 1590
570
Specific Heat Capacity, J/kg-K 550
960
Thermal Conductivity, W/m-K 8.1
52
Thermal Expansion, µm/m-K 9.1
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
47

Otherwise Unclassified Properties

Base Metal Price, % relative 37
34
Density, g/cm3 4.5
1.9
Embodied Carbon, kg CO2/kg material 36
29
Embodied Energy, MJ/kg 580
260
Embodied Water, L/kg 150
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
360 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
62
Strength to Weight: Axial, points 43 to 60
39 to 43
Strength to Weight: Bending, points 39 to 48
49 to 51
Thermal Diffusivity, mm2/s 3.3
28
Thermal Shock Resistance, points 52 to 71
18 to 19

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.030
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0
0 to 0.030
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Silicon (Si), % 0
0 to 0.010
Titanium (Ti), % 92.6 to 95.5
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Vanadium (V), % 2.0 to 3.0
0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3