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515.0 Aluminum vs. Titanium 6-6-2

515.0 aluminum belongs to the aluminum alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is 515.0 aluminum and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 10
6.7 to 9.0
Fatigue Strength, MPa 130
590 to 670
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
44
Shear Strength, MPa 190
670 to 800
Tensile Strength: Ultimate (UTS), MPa 280
1140 to 1370

Thermal Properties

Latent Heat of Fusion, J/g 470
400
Maximum Temperature: Mechanical, °C 170
310
Melting Completion (Liquidus), °C 620
1610
Melting Onset (Solidus), °C 620
1560
Specific Heat Capacity, J/kg-K 900
540
Thermal Expansion, µm/m-K 23
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 2.6
4.8
Embodied Carbon, kg CO2/kg material 8.4
29
Embodied Energy, MJ/kg 150
470
Embodied Water, L/kg 1120
200

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
34
Strength to Weight: Axial, points 30
66 to 79
Strength to Weight: Bending, points 36
50 to 57
Thermal Shock Resistance, points 13
75 to 90

Alloy Composition

Aluminum (Al), % 93.6 to 96.6
5.0 to 6.0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0 to 0.2
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.3
0.35 to 1.0
Magnesium (Mg), % 2.5 to 4.0
0
Manganese (Mn), % 0.4 to 0.6
0
Molybdenum (Mo), % 0
5.0 to 6.0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0.5 to 10
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.4