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852.0 Aluminum vs. Grade 21 Titanium

852.0 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 (5, in this case) are not shown.

For each property being compared, the top bar is 852.0 aluminum and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
140
Elongation at Break, % 3.4
9.0 to 17
Fatigue Strength, MPa 73
550 to 660
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
51
Shear Strength, MPa 130
550 to 790
Tensile Strength: Ultimate (UTS), MPa 200
890 to 1340
Tensile Strength: Yield (Proof), MPa 150
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 190
310
Melting Completion (Liquidus), °C 640
1740
Melting Onset (Solidus), °C 210
1690
Specific Heat Capacity, J/kg-K 840
500
Thermal Conductivity, W/m-K 180
7.5
Thermal Expansion, µm/m-K 23
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
60
Density, g/cm3 3.2
5.4
Embodied Carbon, kg CO2/kg material 8.5
32
Embodied Energy, MJ/kg 160
490
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.2
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 160
2760 to 5010
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
32
Strength to Weight: Axial, points 17
46 to 69
Strength to Weight: Bending, points 24
38 to 50
Thermal Diffusivity, mm2/s 65
2.8
Thermal Shock Resistance, points 8.7
66 to 100

Alloy Composition


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Aluminum (Al), % 86.6 to 91.3
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 1.7 to 2.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.7
0 to 0.4
Magnesium (Mg), % 0.6 to 0.9
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
14 to 16
Nickel (Ni), % 0.9 to 1.5
0
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
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
76 to 81.2
Residuals, % 0 to 0.3
0 to 0.4