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4115 Aluminum vs. Titanium 6-7

4115 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 4115 aluminum and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 1.1 to 11
11
Fatigue Strength, MPa 39 to 76
530
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
45
Shear Strength, MPa 71 to 130
610
Tensile Strength: Ultimate (UTS), MPa 120 to 220
1020
Tensile Strength: Yield (Proof), MPa 39 to 190
900

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 160
300
Melting Completion (Liquidus), °C 640
1700
Melting Onset (Solidus), °C 590
1650
Specific Heat Capacity, J/kg-K 900
520
Thermal Expansion, µm/m-K 23
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 8.1
34
Embodied Energy, MJ/kg 150
540
Embodied Water, L/kg 1160
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 10
110
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 270
3460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
32
Strength to Weight: Axial, points 12 to 23
56
Strength to Weight: Bending, points 20 to 30
44
Thermal Shock Resistance, points 5.2 to 9.9
66

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
5.5 to 6.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0.1 to 0.5
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 0 to 0.7
0 to 0.25
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
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), % 1.8 to 2.2
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0