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7049 Aluminum vs. Grade 6 Titanium

7049 aluminum belongs to the aluminum alloys classification, while grade 6 titanium belongs to the titanium 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 7049 aluminum and the bottom bar is grade 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 6.2 to 7.0
11
Fatigue Strength, MPa 160 to 170
290
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
39
Shear Strength, MPa 300 to 310
530
Tensile Strength: Ultimate (UTS), MPa 510 to 530
890
Tensile Strength: Yield (Proof), MPa 420 to 450
840

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 180
310
Melting Completion (Liquidus), °C 640
1580
Melting Onset (Solidus), °C 480
1530
Specific Heat Capacity, J/kg-K 860
550
Thermal Conductivity, W/m-K 130
7.8
Thermal Expansion, µm/m-K 23
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 3.1
4.5
Embodied Carbon, kg CO2/kg material 8.1
30
Embodied Energy, MJ/kg 140
480
Embodied Water, L/kg 1110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
92
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
3390
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
35
Strength to Weight: Axial, points 46 to 47
55
Strength to Weight: Bending, points 46 to 47
46
Thermal Diffusivity, mm2/s 51
3.2
Thermal Shock Resistance, points 22 to 23
65

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
4.0 to 6.0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.25
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0 to 0.1
89.8 to 94
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0
0 to 0.4