MakeItFrom.com
Menu (ESC)

2218 Aluminum vs. Grade 2 Titanium

2218 aluminum belongs to the aluminum alloys classification, while grade 2 titanium belongs to the titanium alloys. There are 31 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 2218 aluminum and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 110
150
Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 6.8 to 10
23
Fatigue Strength, MPa 110
250
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
38
Shear Strength, MPa 210 to 250
270
Tensile Strength: Ultimate (UTS), MPa 330 to 430
420
Tensile Strength: Yield (Proof), MPa 260 to 310
360

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 220
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 510
1610
Specific Heat Capacity, J/kg-K 870
540
Thermal Conductivity, W/m-K 140
22
Thermal Expansion, µm/m-K 22
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 3.1
4.5
Embodied Carbon, kg CO2/kg material 8.2
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1130
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
92
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
600
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
35
Strength to Weight: Axial, points 30 to 39
26
Strength to Weight: Bending, points 34 to 41
28
Thermal Diffusivity, mm2/s 52
8.9
Thermal Shock Resistance, points 15 to 19
32

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.0
0 to 0.3
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Silicon (Si), % 0 to 0.9
0
Titanium (Ti), % 0
98.9 to 100
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.4