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Grade 23 Titanium vs. M1A Magnesium

Grade 23 titanium belongs to the titanium alloys classification, while M1A magnesium belongs to the magnesium 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 grade 23 titanium and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 6.7 to 11
5.5
Fatigue Strength, MPa 470 to 500
88
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
18
Shear Strength, MPa 540 to 570
120
Tensile Strength: Ultimate (UTS), MPa 930 to 940
230
Tensile Strength: Yield (Proof), MPa 850 to 870
130

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 340
95
Melting Completion (Liquidus), °C 1610
610
Melting Onset (Solidus), °C 1560
580
Specific Heat Capacity, J/kg-K 560
990
Thermal Conductivity, W/m-K 7.1
150
Thermal Expansion, µm/m-K 9.4
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
190

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61 to 100
11
Resilience: Unit (Modulus of Resilience), kJ/m3 3430 to 3560
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
71
Strength to Weight: Axial, points 58 to 59
38
Strength to Weight: Bending, points 48
49
Thermal Diffusivity, mm2/s 2.9
88
Thermal Shock Resistance, points 67 to 68
13

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.25
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0
1.2 to 2.0
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.13
0
Silicon (Si), % 0
0 to 0.1
Titanium (Ti), % 88.1 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.3