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238.0 Aluminum vs. Grade 17 Titanium

238.0 aluminum belongs to the aluminum alloys classification, while grade 17 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 238.0 aluminum and the bottom bar is grade 17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
110
Elongation at Break, % 1.5
27
Fatigue Strength, MPa 110
160
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
38
Tensile Strength: Ultimate (UTS), MPa 210
270
Tensile Strength: Yield (Proof), MPa 170
210

Thermal Properties

Latent Heat of Fusion, J/g 430
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 600
1660
Melting Onset (Solidus), °C 510
1610
Specific Heat Capacity, J/kg-K 840
540
Thermal Conductivity, W/m-K 100
23
Thermal Expansion, µm/m-K 21
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 67
7.3

Otherwise Unclassified Properties

Density, g/cm3 3.4
4.5
Embodied Carbon, kg CO2/kg material 7.4
36
Embodied Energy, MJ/kg 140
600
Embodied Water, L/kg 1040
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
68
Resilience: Unit (Modulus of Resilience), kJ/m3 180
220
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 42
35
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 37
9.3
Thermal Shock Resistance, points 9.1
21

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 9.5 to 10.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 1.0 to 1.5
0 to 0.2
Magnesium (Mg), % 0 to 0.25
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 3.6 to 4.4
0
Titanium (Ti), % 0
99.015 to 99.96
Zinc (Zn), % 1.0 to 1.5
0
Residuals, % 0
0 to 0.4