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5154A Aluminum vs. Grade 21 Titanium

5154A 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 5154A 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, % 1.1 to 19
9.0 to 17
Fatigue Strength, MPa 83 to 160
550 to 660
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
51
Shear Strength, MPa 140 to 210
550 to 790
Tensile Strength: Ultimate (UTS), MPa 230 to 370
890 to 1340
Tensile Strength: Yield (Proof), MPa 96 to 320
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 8.8
32
Embodied Energy, MJ/kg 150
490
Embodied Water, L/kg 1180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 36
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 760
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
32
Strength to Weight: Axial, points 24 to 38
46 to 69
Strength to Weight: Bending, points 31 to 43
38 to 50
Thermal Diffusivity, mm2/s 53
2.8
Thermal Shock Resistance, points 10 to 16
66 to 100

Alloy Composition


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Aluminum (Al), % 93.7 to 96.9
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 3.1 to 3.9
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 0.5
0.15 to 0.25
Titanium (Ti), % 0 to 0.2
76 to 81.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0 to 0.4

Comparable Variants