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711.0 Aluminum vs. Grade 18 Titanium

711.0 aluminum belongs to the aluminum alloys classification, while grade 18 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 711.0 aluminum and the bottom bar is grade 18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 7.8
11 to 17
Fatigue Strength, MPa 100
330 to 480
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 220
690 to 980
Tensile Strength: Yield (Proof), MPa 140
540 to 810

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 170
330
Melting Completion (Liquidus), °C 640
1640
Melting Onset (Solidus), °C 610
1590
Specific Heat Capacity, J/kg-K 860
550
Thermal Conductivity, W/m-K 160
8.3
Thermal Expansion, µm/m-K 24
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.7

Otherwise Unclassified Properties

Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 7.9
41
Embodied Energy, MJ/kg 150
670
Embodied Water, L/kg 1120
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1380 to 3110
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
35
Strength to Weight: Axial, points 20
43 to 61
Strength to Weight: Bending, points 26
39 to 49
Thermal Diffusivity, mm2/s 61
3.4
Thermal Shock Resistance, points 9.3
47 to 67

Alloy Composition

Aluminum (Al), % 89.8 to 92.7
2.5 to 3.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0.35 to 0.65
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0.7 to 1.4
0 to 0.25
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.050
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.2
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0
0 to 0.4