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Grade 4 Titanium vs. M1A Magnesium

Grade 4 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 (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 grade 4 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, % 17
5.5
Fatigue Strength, MPa 340
88
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
18
Shear Strength, MPa 390
120
Tensile Strength: Ultimate (UTS), MPa 640
230
Tensile Strength: Yield (Proof), MPa 530
130

Thermal Properties

Latent Heat of Fusion, J/g 420
350
Maximum Temperature: Mechanical, °C 320
95
Melting Completion (Liquidus), °C 1660
610
Melting Onset (Solidus), °C 1610
580
Specific Heat Capacity, J/kg-K 540
990
Thermal Conductivity, W/m-K 19
150
Thermal Expansion, µm/m-K 9.4
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
35
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
190

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 4.5
1.7
Embodied Carbon, kg CO2/kg material 31
24
Embodied Energy, MJ/kg 500
160
Embodied Water, L/kg 110
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
11
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
71
Strength to Weight: Axial, points 40
38
Strength to Weight: Bending, points 37
49
Thermal Diffusivity, mm2/s 7.6
88
Thermal Shock Resistance, points 46
13

Alloy Composition

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 0.015
0
Iron (Fe), % 0 to 0.5
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 0.050
0
Oxygen (O), % 0 to 0.4
0
Silicon (Si), % 0
0 to 0.1
Titanium (Ti), % 98.6 to 100
0
Residuals, % 0
0 to 0.3