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8090 Aluminum vs. Grade 25 Titanium

8090 aluminum belongs to the aluminum alloys classification, while grade 25 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 8090 aluminum and the bottom bar is grade 25 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
110
Elongation at Break, % 3.5 to 13
11
Fatigue Strength, MPa 91 to 140
550
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
40
Tensile Strength: Ultimate (UTS), MPa 340 to 490
1000
Tensile Strength: Yield (Proof), MPa 210 to 420
940

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 190
340
Melting Completion (Liquidus), °C 660
1610
Melting Onset (Solidus), °C 600
1560
Specific Heat Capacity, J/kg-K 960
560
Thermal Conductivity, W/m-K 95 to 160
7.1
Thermal Expansion, µm/m-K 24
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 66
2.0

Otherwise Unclassified Properties

Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.6
43
Embodied Energy, MJ/kg 170
700
Embodied Water, L/kg 1160
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
110
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
4220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 34 to 49
62
Strength to Weight: Bending, points 39 to 50
50
Thermal Diffusivity, mm2/s 36 to 60
2.8
Thermal Shock Resistance, points 15 to 22
71

Alloy Composition

Aluminum (Al), % 93 to 98.4
5.5 to 6.8
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 1.0 to 1.6
0
Hydrogen (H), % 0
0 to 0.013
Iron (Fe), % 0 to 0.3
0 to 0.4
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0.3 to 0.8
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
86.7 to 90.6
Vanadium (V), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.16
0
Residuals, % 0
0 to 0.4