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AWS ERTi-7 vs. 7022 Aluminum

AWS ERTi-7 belongs to the titanium alloys classification, while 7022 aluminum belongs to the aluminum alloys. There are 28 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 AWS ERTi-7 and the bottom bar is 7022 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 20
6.3 to 8.0
Fatigue Strength, MPa 190
140 to 170
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 340
490 to 540
Tensile Strength: Yield (Proof), MPa 280
390 to 460

Thermal Properties

Latent Heat of Fusion, J/g 420
380
Maximum Temperature: Mechanical, °C 320
200
Melting Completion (Liquidus), °C 1670
640
Melting Onset (Solidus), °C 1620
480
Specific Heat Capacity, J/kg-K 540
870
Thermal Conductivity, W/m-K 21
140
Thermal Expansion, µm/m-K 8.7
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
21
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
65

Otherwise Unclassified Properties

Density, g/cm3 4.5
2.9
Embodied Carbon, kg CO2/kg material 47
8.5
Embodied Energy, MJ/kg 800
150
Embodied Water, L/kg 470
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
29 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1100 to 1500
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
47
Strength to Weight: Axial, points 21
47 to 51
Strength to Weight: Bending, points 24
47 to 50
Thermal Diffusivity, mm2/s 8.8
54
Thermal Shock Resistance, points 26
21 to 23

Alloy Composition

Aluminum (Al), % 0
87.9 to 92.4
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 0
0.5 to 1.0
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
0 to 0.5
Magnesium (Mg), % 0
2.6 to 3.7
Manganese (Mn), % 0
0.1 to 0.4
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Silicon (Si), % 0
0 to 0.5
Titanium (Ti), % 99.417 to 99.8
0 to 0.2
Zinc (Zn), % 0
4.3 to 5.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15