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Grade 17 Titanium vs. ZK61A Magnesium

Grade 17 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 (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 grade 17 titanium and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 27
5.8 to 7.1
Fatigue Strength, MPa 160
120 to 140
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
18
Shear Strength, MPa 180
170 to 180
Tensile Strength: Ultimate (UTS), MPa 270
290 to 310
Tensile Strength: Yield (Proof), MPa 210
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 420
330
Maximum Temperature: Mechanical, °C 320
120
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
530
Specific Heat Capacity, J/kg-K 540
960
Thermal Conductivity, W/m-K 23
120
Thermal Expansion, µm/m-K 8.7
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
29
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
130

Otherwise Unclassified Properties

Density, g/cm3 4.5
1.9
Embodied Carbon, kg CO2/kg material 36
23
Embodied Energy, MJ/kg 600
160
Embodied Water, L/kg 230
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 220
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
62
Strength to Weight: Axial, points 17
42 to 45
Strength to Weight: Bending, points 21
50 to 53
Thermal Diffusivity, mm2/s 9.3
65
Thermal Shock Resistance, points 21
17 to 18

Alloy Composition

Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 99.015 to 99.96
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3