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2618A Aluminum vs. AWS ERTi-7

2618A aluminum belongs to the aluminum alloys classification, while AWS ERTi-7 belongs to the titanium 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 2618A aluminum and the bottom bar is AWS ERTi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 4.5
20
Fatigue Strength, MPa 120
190
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 440
340
Tensile Strength: Yield (Proof), MPa 410
280

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 230
320
Melting Completion (Liquidus), °C 670
1670
Melting Onset (Solidus), °C 560
1620
Specific Heat Capacity, J/kg-K 880
540
Thermal Conductivity, W/m-K 150
21
Thermal Expansion, µm/m-K 23
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.3

Otherwise Unclassified Properties

Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 8.4
47
Embodied Energy, MJ/kg 150
800
Embodied Water, L/kg 1150
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
64
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 41
21
Strength to Weight: Bending, points 44
24
Thermal Diffusivity, mm2/s 59
8.8
Thermal Shock Resistance, points 19
26

Alloy Composition

Aluminum (Al), % 91.5 to 95.2
0
Carbon (C), % 0
0 to 0.030
Copper (Cu), % 1.8 to 2.7
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 0.9 to 1.4
0 to 0.12
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.25
0
Nickel (Ni), % 0.8 to 1.4
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
Silicon (Si), % 0.15 to 0.25
0
Titanium (Ti), % 0 to 0.2
99.417 to 99.8
Zinc (Zn), % 0 to 0.15
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0