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Grade C-6 Titanium vs. ZK61A Magnesium

Grade C-6 titanium belongs to the titanium alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 C-6 titanium and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
46
Elongation at Break, % 9.0
5.8 to 7.1
Fatigue Strength, MPa 460
120 to 140
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
18
Tensile Strength: Ultimate (UTS), MPa 890
290 to 310
Tensile Strength: Yield (Proof), MPa 830
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 310
120
Melting Completion (Liquidus), °C 1580
640
Melting Onset (Solidus), °C 1530
530
Specific Heat Capacity, J/kg-K 550
960
Thermal Conductivity, W/m-K 7.8
120
Thermal Expansion, µm/m-K 9.8
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 4.5
1.9
Embodied Carbon, kg CO2/kg material 30
23
Embodied Energy, MJ/kg 480
160
Embodied Water, L/kg 190
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 3300
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
62
Strength to Weight: Axial, points 55
42 to 45
Strength to Weight: Bending, points 46
50 to 53
Thermal Diffusivity, mm2/s 3.2
65
Thermal Shock Resistance, points 63
17 to 18

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0 to 0.050
0 to 0.010
Oxygen (O), % 0 to 0.2
0
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.7 to 94
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3