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Grade 38 Titanium vs. ZC63A Magnesium

Grade 38 titanium belongs to the titanium alloys classification, while ZC63A magnesium belongs to the magnesium alloys. There are 30 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 38 titanium and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
48
Elongation at Break, % 11
3.3
Fatigue Strength, MPa 530
94
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
19
Shear Strength, MPa 600
130
Tensile Strength: Ultimate (UTS), MPa 1000
220
Tensile Strength: Yield (Proof), MPa 910
130

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 330
98
Melting Completion (Liquidus), °C 1620
550
Melting Onset (Solidus), °C 1570
470
Specific Heat Capacity, J/kg-K 550
950
Thermal Conductivity, W/m-K 8.0
120
Thermal Expansion, µm/m-K 9.3
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
140

Otherwise Unclassified Properties

Base Metal Price, % relative 36
13
Density, g/cm3 4.5
2.1
Embodied Carbon, kg CO2/kg material 35
22
Embodied Energy, MJ/kg 560
150
Embodied Water, L/kg 160
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
58
Strength to Weight: Axial, points 62
29
Strength to Weight: Bending, points 49
38
Thermal Diffusivity, mm2/s 3.2
58
Thermal Shock Resistance, points 72
12

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
2.4 to 3.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0
0.25 to 0.75
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.2 to 0.3
0
Silicon (Si), % 0
0 to 0.2
Titanium (Ti), % 89.9 to 93.1
0
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
5.5 to 6.5
Residuals, % 0
0 to 0.3