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Grade 1 Titanium vs. 7049A Aluminum

Grade 1 titanium belongs to the titanium alloys classification, while 7049A aluminum belongs to the aluminum 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 grade 1 titanium and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 28
5.0 to 5.7
Fatigue Strength, MPa 170
180
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 39
27
Shear Strength, MPa 200
340 to 350
Tensile Strength: Ultimate (UTS), MPa 310
580 to 590
Tensile Strength: Yield (Proof), MPa 220
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 420
370
Maximum Temperature: Mechanical, °C 320
200
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
430
Specific Heat Capacity, J/kg-K 540
850
Thermal Conductivity, W/m-K 20
130
Thermal Expansion, µm/m-K 8.8
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
40
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 37
10
Density, g/cm3 4.5
3.1
Embodied Carbon, kg CO2/kg material 31
8.2
Embodied Energy, MJ/kg 510
150
Embodied Water, L/kg 110
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1800 to 1990
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
44
Strength to Weight: Axial, points 19
52 to 53
Strength to Weight: Bending, points 23
50 to 51
Thermal Diffusivity, mm2/s 8.2
50
Thermal Shock Resistance, points 24
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0
1.2 to 1.9
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.5
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Silicon (Si), % 0
0 to 0.4
Titanium (Ti), % 99.095 to 100
0 to 0.25
Zinc (Zn), % 0
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15