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EN-MC21320 Magnesium vs. Grade C-5 Titanium

EN-MC21320 magnesium belongs to the magnesium alloys classification, while grade C-5 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 EN-MC21320 magnesium and the bottom bar is grade C-5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
310
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 7.5
6.7
Fatigue Strength, MPa 95
510
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 230
1000
Tensile Strength: Yield (Proof), MPa 140
940

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 110
340
Melting Completion (Liquidus), °C 600
1610
Melting Onset (Solidus), °C 530
1560
Specific Heat Capacity, J/kg-K 1000
560
Thermal Conductivity, W/m-K 66
7.1
Thermal Expansion, µm/m-K 26
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.6
4.4
Embodied Carbon, kg CO2/kg material 23
38
Embodied Energy, MJ/kg 160
610
Embodied Water, L/kg 980
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
66
Resilience: Unit (Modulus of Resilience), kJ/m3 200
4200
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
35
Strength to Weight: Axial, points 38
63
Strength to Weight: Bending, points 50
50
Thermal Diffusivity, mm2/s 40
2.9
Thermal Shock Resistance, points 13
71

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
5.5 to 6.8
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.0050
0 to 0.4
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Silicon (Si), % 0.5 to 1.5
0
Titanium (Ti), % 0
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0 to 0.4