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Grade 12 Titanium vs. 7049 Aluminum

Grade 12 titanium belongs to the titanium alloys classification, while 7049 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 12 titanium and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
140
Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 21
6.2 to 7.0
Fatigue Strength, MPa 280
160 to 170
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 39
27
Shear Strength, MPa 330
300 to 310
Tensile Strength: Ultimate (UTS), MPa 530
510 to 530
Tensile Strength: Yield (Proof), MPa 410
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 420
370
Maximum Temperature: Mechanical, °C 320
180
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
480
Specific Heat Capacity, J/kg-K 540
860
Thermal Conductivity, W/m-K 21
130
Thermal Expansion, µm/m-K 9.6
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
36
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
110

Otherwise Unclassified Properties

Base Metal Price, % relative 37
10
Density, g/cm3 4.5
3.1
Embodied Carbon, kg CO2/kg material 31
8.1
Embodied Energy, MJ/kg 500
140
Embodied Water, L/kg 110
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 770
1270 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
45
Strength to Weight: Axial, points 32
46 to 47
Strength to Weight: Bending, points 32
46 to 47
Thermal Diffusivity, mm2/s 8.5
51
Thermal Shock Resistance, points 37
22 to 23

Alloy Composition

Aluminum (Al), % 0
85.7 to 89.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0.1 to 0.22
Copper (Cu), % 0
1.2 to 1.9
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0
0 to 0.2
Molybdenum (Mo), % 0.2 to 0.4
0
Nickel (Ni), % 0.6 to 0.9
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
0 to 0.25
Titanium (Ti), % 97.6 to 99.2
0 to 0.1
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15