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6351 Aluminum vs. Grade 1 Titanium

6351 aluminum belongs to the aluminum alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 6351 aluminum and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 7.8 to 18
28
Fatigue Strength, MPa 79 to 130
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
39
Shear Strength, MPa 84 to 200
200
Tensile Strength: Ultimate (UTS), MPa 140 to 310
310
Tensile Strength: Yield (Proof), MPa 95 to 270
220

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 160
320
Melting Completion (Liquidus), °C 650
1660
Melting Onset (Solidus), °C 570
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 180
20
Thermal Expansion, µm/m-K 23
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 150
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.3
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
79
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 14 to 32
19
Strength to Weight: Bending, points 22 to 38
23
Thermal Diffusivity, mm2/s 72
8.2
Thermal Shock Resistance, points 6.1 to 14
24

Alloy Composition

Aluminum (Al), % 96 to 98.5
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Silicon (Si), % 0.7 to 1.3
0
Titanium (Ti), % 0 to 0.2
99.095 to 100
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.4