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6061 Aluminum vs. Titanium 6-7

6061 aluminum belongs to the aluminum alloys classification, while titanium 6-7 belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is 6061 aluminum and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 3.4 to 20
11
Fatigue Strength, MPa 58 to 110
530
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
45
Shear Strength, MPa 84 to 210
610
Tensile Strength: Ultimate (UTS), MPa 130 to 410
1020
Tensile Strength: Yield (Proof), MPa 76 to 370
900

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 170
300
Melting Completion (Liquidus), °C 650
1700
Melting Onset (Solidus), °C 580
1650
Specific Heat Capacity, J/kg-K 900
520
Thermal Expansion, µm/m-K 24
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
75
Density, g/cm3 2.7
5.1
Embodied Carbon, kg CO2/kg material 8.3
34
Embodied Energy, MJ/kg 150
540
Embodied Water, L/kg 1180
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.8 to 81
110
Resilience: Unit (Modulus of Resilience), kJ/m3 42 to 1000
3460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
32
Strength to Weight: Axial, points 13 to 42
56
Strength to Weight: Bending, points 21 to 45
44
Thermal Shock Resistance, points 5.7 to 18
66

Alloy Composition

Aluminum (Al), % 95.9 to 98.6
5.5 to 6.5
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.040 to 0.35
0
Copper (Cu), % 0.15 to 0.4
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 0 to 0.7
0 to 0.25
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0
Molybdenum (Mo), % 0
6.5 to 7.5
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0.4 to 0.8
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0 to 0.15
84.9 to 88
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0