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EN-MC21230 Magnesium vs. Grade 38 Titanium

EN-MC21230 magnesium belongs to the magnesium alloys classification, while grade 38 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-MC21230 magnesium and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 10
11
Fatigue Strength, MPa 99
530
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Shear Strength, MPa 130
600
Tensile Strength: Ultimate (UTS), MPa 220
1000
Tensile Strength: Yield (Proof), MPa 140
910

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 120
330
Melting Completion (Liquidus), °C 600
1620
Melting Onset (Solidus), °C 520
1570
Specific Heat Capacity, J/kg-K 1000
550
Thermal Conductivity, W/m-K 72
8.0
Thermal Expansion, µm/m-K 27
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 63
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
4.5
Embodied Carbon, kg CO2/kg material 23
35
Embodied Energy, MJ/kg 160
560
Embodied Water, L/kg 990
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
3840
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
35
Strength to Weight: Axial, points 36
62
Strength to Weight: Bending, points 48
49
Thermal Diffusivity, mm2/s 43
3.2
Thermal Shock Resistance, points 13
72

Alloy Composition


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Aluminum (Al), % 5.5 to 8.5
3.5 to 4.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.010
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.0050
1.2 to 1.8
Magnesium (Mg), % 90.5 to 94.4
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0.2 to 0.3
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0
89.9 to 93.1
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.010
0 to 0.4