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Grade 7 Titanium vs. ZK60A Magnesium

Grade 7 titanium belongs to the titanium alloys classification, while ZK60A 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 7 titanium and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 24
4.5 to 9.9
Fatigue Strength, MPa 250
150 to 180
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
18
Shear Strength, MPa 270
170 to 190
Tensile Strength: Ultimate (UTS), MPa 420
320 to 330
Tensile Strength: Yield (Proof), MPa 340
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 420
330
Maximum Temperature: Mechanical, °C 320
120
Melting Completion (Liquidus), °C 1660
600
Melting Onset (Solidus), °C 1610
550
Specific Heat Capacity, J/kg-K 540
960
Thermal Conductivity, W/m-K 22
120
Thermal Expansion, µm/m-K 9.2
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
29 to 30
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
140

Otherwise Unclassified Properties

Density, g/cm3 4.5
1.9
Embodied Carbon, kg CO2/kg material 47
23
Embodied Energy, MJ/kg 800
160
Embodied Water, L/kg 470
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 560
570 to 690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
63
Strength to Weight: Axial, points 26
47 to 49
Strength to Weight: Bending, points 28
55 to 56
Thermal Diffusivity, mm2/s 8.9
66
Thermal Shock Resistance, points 31
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0
Magnesium (Mg), % 0
92.5 to 94.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.12 to 0.25
0
Titanium (Ti), % 98.7 to 99.88
0
Zinc (Zn), % 0
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3