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Grade 20 Titanium vs. ISO-WD21150 Magnesium

Grade 20 titanium belongs to the titanium alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 24 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 grade 20 titanium and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 5.7 to 17
5.7 to 11
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 47
17
Shear Strength, MPa 560 to 740
150 to 170
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
240 to 290
Tensile Strength: Yield (Proof), MPa 850 to 1190
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 370
110
Melting Completion (Liquidus), °C 1660
600
Melting Onset (Solidus), °C 1600
550
Specific Heat Capacity, J/kg-K 520
990
Thermal Expansion, µm/m-K 9.6
27

Otherwise Unclassified Properties

Density, g/cm3 5.0
1.7
Embodied Carbon, kg CO2/kg material 52
23
Embodied Energy, MJ/kg 860
160
Embodied Water, L/kg 350
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
160 to 460
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 33
70
Strength to Weight: Axial, points 50 to 70
40 to 48
Strength to Weight: Bending, points 41 to 52
52 to 58
Thermal Shock Resistance, points 55 to 77
15 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
2.4 to 3.6
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0 to 0.1
Titanium (Ti), % 71 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0.5 to 1.5
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.3

Comparable Variants