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Grade 18 Titanium vs. ISO-WD32260 Magnesium

Grade 18 titanium belongs to the titanium alloys classification, while ISO-WD32260 magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 18 titanium and the bottom bar is ISO-WD32260 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 11 to 17
4.5 to 6.0
Fatigue Strength, MPa 330 to 480
150 to 190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
18
Shear Strength, MPa 420 to 590
190 to 200
Tensile Strength: Ultimate (UTS), MPa 690 to 980
330 to 340
Tensile Strength: Yield (Proof), MPa 540 to 810
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 330
120
Melting Completion (Liquidus), °C 1640
600
Melting Onset (Solidus), °C 1590
520
Specific Heat Capacity, J/kg-K 550
970
Thermal Conductivity, W/m-K 8.3
110
Thermal Expansion, µm/m-K 9.9
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
140

Otherwise Unclassified Properties

Density, g/cm3 4.5
1.9
Embodied Carbon, kg CO2/kg material 41
23
Embodied Energy, MJ/kg 670
160
Embodied Water, L/kg 270
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
14 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3110
560 to 700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
63
Strength to Weight: Axial, points 43 to 61
48 to 51
Strength to Weight: Bending, points 39 to 49
56 to 58
Thermal Diffusivity, mm2/s 3.4
63
Thermal Shock Resistance, points 47 to 67
19 to 20

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.080
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0
Magnesium (Mg), % 0
92.7 to 94.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3