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7050 Aluminum vs. Grade 38 Titanium

7050 aluminum belongs to the aluminum alloys classification, while grade 38 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7050 aluminum and the bottom bar is grade 38 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 2.2 to 12
11
Fatigue Strength, MPa 130 to 210
530
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 280 to 330
600
Tensile Strength: Ultimate (UTS), MPa 490 to 570
1000
Tensile Strength: Yield (Proof), MPa 390 to 500
910

Thermal Properties

Latent Heat of Fusion, J/g 370
410
Maximum Temperature: Mechanical, °C 190
330
Melting Completion (Liquidus), °C 630
1620
Melting Onset (Solidus), °C 490
1570
Specific Heat Capacity, J/kg-K 860
550
Thermal Conductivity, W/m-K 140
8.0
Thermal Expansion, µm/m-K 24
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 3.1
4.5
Embodied Carbon, kg CO2/kg material 8.2
35
Embodied Energy, MJ/kg 150
560
Embodied Water, L/kg 1120
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
3840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
35
Strength to Weight: Axial, points 45 to 51
62
Strength to Weight: Bending, points 45 to 50
49
Thermal Diffusivity, mm2/s 54
3.2
Thermal Shock Resistance, points 21 to 25
72

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
3.5 to 4.5
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.040
0
Copper (Cu), % 2.0 to 2.6
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.15
1.2 to 1.8
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0.2 to 0.3
Silicon (Si), % 0 to 0.12
0
Titanium (Ti), % 0 to 0.060
89.9 to 93.1
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.080 to 0.15
0
Residuals, % 0
0 to 0.4