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5754 Aluminum vs. Grade 21 Titanium

5754 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 5754 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, % 2.0 to 19
9.0 to 17
Fatigue Strength, MPa 66 to 140
550 to 660
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
51
Shear Strength, MPa 120 to 190
550 to 790
Tensile Strength: Ultimate (UTS), MPa 200 to 330
890 to 1340
Tensile Strength: Yield (Proof), MPa 80 to 280
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 190
310
Melting Completion (Liquidus), °C 650
1740
Melting Onset (Solidus), °C 600
1690
Specific Heat Capacity, J/kg-K 900
500
Thermal Conductivity, W/m-K 130
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 150
490
Embodied Water, L/kg 1180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1 to 32
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 47 to 580
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
32
Strength to Weight: Axial, points 21 to 34
46 to 69
Strength to Weight: Bending, points 28 to 39
38 to 50
Thermal Diffusivity, mm2/s 54
2.8
Thermal Shock Resistance, points 8.9 to 14
66 to 100

Alloy Composition


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Aluminum (Al), % 94.2 to 97.4
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.4
0 to 0.4
Magnesium (Mg), % 2.6 to 3.6
0
Manganese (Mn), % 0 to 0.5
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 0.4
0.15 to 0.25
Titanium (Ti), % 0 to 0.15
76 to 81.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0 to 0.4

Comparable Variants