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711.0 Aluminum vs. Grade 31 Titanium

711.0 aluminum belongs to the aluminum alloys classification, while grade 31 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 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 7.8
20
Fatigue Strength, MPa 100
300
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 220
510
Tensile Strength: Yield (Proof), MPa 140
450

Thermal Properties

Latent Heat of Fusion, J/g 380
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 610
1610
Specific Heat Capacity, J/kg-K 860
540
Thermal Conductivity, W/m-K 160
21
Thermal Expansion, µm/m-K 24
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
6.9

Otherwise Unclassified Properties

Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 7.9
36
Embodied Energy, MJ/kg 150
600
Embodied Water, L/kg 1120
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
99
Resilience: Unit (Modulus of Resilience), kJ/m3 140
940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
35
Strength to Weight: Axial, points 20
32
Strength to Weight: Bending, points 26
32
Thermal Diffusivity, mm2/s 61
8.5
Thermal Shock Resistance, points 9.3
39

Alloy Composition

Aluminum (Al), % 89.8 to 92.7
0
Carbon (C), % 0
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Copper (Cu), % 0.35 to 0.65
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0.7 to 1.4
0 to 0.3
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.050
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.2
97.9 to 99.76
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0
0 to 0.4