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ISO-WD43150 Magnesium vs. Grade 5 Titanium

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while grade 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 ISO-WD43150 magnesium and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 2.8
8.6 to 11
Fatigue Strength, MPa 100
530 to 630
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Shear Strength, MPa 140
600 to 710
Tensile Strength: Ultimate (UTS), MPa 250
1000 to 1190
Tensile Strength: Yield (Proof), MPa 150
910 to 1110

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 95
330
Melting Completion (Liquidus), °C 610
1610
Melting Onset (Solidus), °C 590
1650
Specific Heat Capacity, J/kg-K 990
560
Thermal Conductivity, W/m-K 140
6.8
Thermal Expansion, µm/m-K 27
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 170
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
4.4
Embodied Carbon, kg CO2/kg material 24
38
Embodied Energy, MJ/kg 160
610
Embodied Water, L/kg 970
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 250
3980 to 5880
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
35
Strength to Weight: Axial, points 41
62 to 75
Strength to Weight: Bending, points 52
50 to 56
Thermal Diffusivity, mm2/s 81
2.7
Thermal Shock Resistance, points 14
76 to 91

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0
0 to 0.4
Magnesium (Mg), % 97.5 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0
Nickel (Ni), % 0 to 0.010
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0
87.4 to 91
Vanadium (V), % 0
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Residuals, % 0 to 0.3
0 to 0.4