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ISO-WD43150 Magnesium vs. Grade 3 Titanium

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while grade 3 titanium belongs to the titanium 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 ISO-WD43150 magnesium and the bottom bar is grade 3 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 2.8
21
Fatigue Strength, MPa 100
300
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
39
Shear Strength, MPa 140
320
Tensile Strength: Ultimate (UTS), MPa 250
510
Tensile Strength: Yield (Proof), MPa 150
440

Thermal Properties

Latent Heat of Fusion, J/g 350
420
Maximum Temperature: Mechanical, °C 95
320
Melting Completion (Liquidus), °C 610
1660
Melting Onset (Solidus), °C 590
1610
Specific Heat Capacity, J/kg-K 990
540
Thermal Conductivity, W/m-K 140
21
Thermal Expansion, µm/m-K 27
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 170
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.7
4.5
Embodied Carbon, kg CO2/kg material 24
31
Embodied Energy, MJ/kg 160
510
Embodied Water, L/kg 970
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
100
Resilience: Unit (Modulus of Resilience), kJ/m3 250
910
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
35
Strength to Weight: Axial, points 41
32
Strength to Weight: Bending, points 52
32
Thermal Diffusivity, mm2/s 81
8.6
Thermal Shock Resistance, points 14
37

Alloy Composition

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 0.3
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 0.35
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0
98.8 to 100
Residuals, % 0 to 0.3
0 to 0.4