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Grade 6 Titanium vs. 7076 Aluminum

Grade 6 titanium belongs to the titanium alloys classification, while 7076 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 6 titanium and the bottom bar is 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
70
Elongation at Break, % 11
6.2
Fatigue Strength, MPa 290
170
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 39
27
Shear Strength, MPa 530
310
Tensile Strength: Ultimate (UTS), MPa 890
530
Tensile Strength: Yield (Proof), MPa 840
460

Thermal Properties

Latent Heat of Fusion, J/g 410
380
Maximum Temperature: Mechanical, °C 310
170
Melting Completion (Liquidus), °C 1580
630
Melting Onset (Solidus), °C 1530
460
Specific Heat Capacity, J/kg-K 550
860
Thermal Conductivity, W/m-K 7.8
140
Thermal Expansion, µm/m-K 9.4
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
100

Otherwise Unclassified Properties

Base Metal Price, % relative 36
9.5
Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 30
8.0
Embodied Energy, MJ/kg 480
150
Embodied Water, L/kg 190
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
31
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
1510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
45
Strength to Weight: Axial, points 55
49
Strength to Weight: Bending, points 46
48
Thermal Diffusivity, mm2/s 3.2
54
Thermal Shock Resistance, points 65
23

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
86.9 to 91.2
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0.3 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
0 to 0.6
Magnesium (Mg), % 0
1.2 to 2.0
Manganese (Mn), % 0
0.3 to 0.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Silicon (Si), % 0
0 to 0.4
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0 to 0.2
Zinc (Zn), % 0
7.0 to 8.0
Residuals, % 0
0 to 0.15