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Grade 29 Titanium vs. ISO-WD21150 Magnesium

Grade 29 titanium belongs to the titanium alloys classification, while ISO-WD21150 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 29 titanium and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 6.8 to 11
5.7 to 11
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
17
Shear Strength, MPa 550 to 560
150 to 170
Tensile Strength: Ultimate (UTS), MPa 930 to 940
240 to 290
Tensile Strength: Yield (Proof), MPa 850 to 870
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 340
110
Melting Completion (Liquidus), °C 1610
600
Melting Onset (Solidus), °C 1560
550
Specific Heat Capacity, J/kg-K 560
990
Thermal Conductivity, W/m-K 7.3
100
Thermal Expansion, µm/m-K 9.3
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
19
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
100

Otherwise Unclassified Properties

Base Metal Price, % relative 36
12
Density, g/cm3 4.5
1.7
Embodied Carbon, kg CO2/kg material 39
23
Embodied Energy, MJ/kg 640
160
Embodied Water, L/kg 410
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 62 to 100
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 3420 to 3540
160 to 460
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
70
Strength to Weight: Axial, points 58 to 59
40 to 48
Strength to Weight: Bending, points 47 to 48
52 to 58
Thermal Diffusivity, mm2/s 2.9
60
Thermal Shock Resistance, points 68 to 69
15 to 17

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
2.4 to 3.6
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.13
0
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.1
Titanium (Ti), % 88 to 90.9
0
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3

Comparable Variants