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Grade 19 Titanium vs. 6351 Aluminum

Grade 19 titanium belongs to the titanium alloys classification, while 6351 aluminum belongs to the aluminum 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 grade 19 titanium and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
69
Elongation at Break, % 5.6 to 17
7.8 to 18
Fatigue Strength, MPa 550 to 620
79 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 550 to 750
84 to 200
Tensile Strength: Ultimate (UTS), MPa 890 to 1300
140 to 310
Tensile Strength: Yield (Proof), MPa 870 to 1170
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 370
160
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1600
570
Specific Heat Capacity, J/kg-K 520
900
Thermal Conductivity, W/m-K 6.2
180
Thermal Expansion, µm/m-K 9.1
23

Otherwise Unclassified Properties

Base Metal Price, % relative 45
9.5
Density, g/cm3 5.0
2.7
Embodied Carbon, kg CO2/kg material 47
8.3
Embodied Energy, MJ/kg 760
150
Embodied Water, L/kg 230
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70 to 150
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 3040 to 5530
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
50
Strength to Weight: Axial, points 49 to 72
14 to 32
Strength to Weight: Bending, points 41 to 53
22 to 38
Thermal Diffusivity, mm2/s 2.4
72
Thermal Shock Resistance, points 57 to 83
6.1 to 14

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
96 to 98.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.5
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 0
0.4 to 0.8
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Silicon (Si), % 0
0.7 to 1.3
Titanium (Ti), % 71.1 to 77
0 to 0.2
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.15

Comparable Variants