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Titanium 6-6-2 vs. ZK51A Magnesium

Titanium 6-6-2 belongs to the titanium alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 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 titanium 6-6-2 and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 6.7 to 9.0
4.7
Fatigue Strength, MPa 590 to 670
62
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 44
18
Shear Strength, MPa 670 to 800
160
Tensile Strength: Ultimate (UTS), MPa 1140 to 1370
240
Tensile Strength: Yield (Proof), MPa 1040 to 1230
150

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 310
120
Melting Completion (Liquidus), °C 1610
640
Melting Onset (Solidus), °C 1560
550
Specific Heat Capacity, J/kg-K 540
970
Thermal Conductivity, W/m-K 5.5
110
Thermal Expansion, µm/m-K 9.4
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.1
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
140

Otherwise Unclassified Properties

Base Metal Price, % relative 40
13
Density, g/cm3 4.8
1.8
Embodied Carbon, kg CO2/kg material 29
24
Embodied Energy, MJ/kg 470
160
Embodied Water, L/kg 200
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 99
10
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
64
Strength to Weight: Axial, points 66 to 79
36
Strength to Weight: Bending, points 50 to 57
47
Thermal Diffusivity, mm2/s 2.1
61
Thermal Shock Resistance, points 75 to 90
15

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.050
0
Copper (Cu), % 0.35 to 1.0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0
Magnesium (Mg), % 0
93.1 to 95.9
Molybdenum (Mo), % 5.0 to 6.0
0
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.2
0
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.8 to 87.8
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3