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ISO-WD43150 Magnesium vs. Grade 23 Titanium

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while grade 23 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 23 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 2.8
6.7 to 11
Fatigue Strength, MPa 100
470 to 500
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Shear Strength, MPa 140
540 to 570
Tensile Strength: Ultimate (UTS), MPa 250
930 to 940
Tensile Strength: Yield (Proof), MPa 150
850 to 870

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 95
340
Melting Completion (Liquidus), °C 610
1610
Melting Onset (Solidus), °C 590
1560
Specific Heat Capacity, J/kg-K 990
560
Thermal Conductivity, W/m-K 140
7.1
Thermal Expansion, µm/m-K 27
9.4

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
61 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 250
3430 to 3560
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
35
Strength to Weight: Axial, points 41
58 to 59
Strength to Weight: Bending, points 52
48
Thermal Diffusivity, mm2/s 81
2.9
Thermal Shock Resistance, points 14
67 to 68

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.013
Iron (Fe), % 0
0 to 0.25
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 0.030
Oxygen (O), % 0
0 to 0.13
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0
88.1 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0 to 0.3
0 to 0.4