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5252 Aluminum vs. Grade 21 Titanium

5252 aluminum belongs to the aluminum alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 5252 aluminum and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
140
Elongation at Break, % 4.5 to 11
9.0 to 17
Fatigue Strength, MPa 100 to 110
550 to 660
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
51
Shear Strength, MPa 140 to 160
550 to 790
Tensile Strength: Ultimate (UTS), MPa 230 to 290
890 to 1340
Tensile Strength: Yield (Proof), MPa 170 to 240
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 180
310
Melting Completion (Liquidus), °C 650
1740
Melting Onset (Solidus), °C 610
1690
Specific Heat Capacity, J/kg-K 910
500
Thermal Conductivity, W/m-K 140
7.5
Thermal Expansion, µm/m-K 24
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
60
Density, g/cm3 2.7
5.4
Embodied Carbon, kg CO2/kg material 8.7
32
Embodied Energy, MJ/kg 160
490
Embodied Water, L/kg 1190
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
32
Strength to Weight: Axial, points 23 to 30
46 to 69
Strength to Weight: Bending, points 31 to 36
38 to 50
Thermal Diffusivity, mm2/s 57
2.8
Thermal Shock Resistance, points 10 to 13
66 to 100

Alloy Composition


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Aluminum (Al), % 96.6 to 97.8
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.1
0 to 0.4
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
14 to 16
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Silicon (Si), % 0 to 0.080
0.15 to 0.25
Titanium (Ti), % 0
76 to 81.2
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.1
0 to 0.4

Comparable Variants