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2218 Aluminum vs. 2195 Aluminum

Both 2218 aluminum and 2195 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common. 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 2218 aluminum and the bottom bar is 2195 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 6.8 to 10
9.3
Fatigue Strength, MPa 110
190
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 210 to 250
350
Tensile Strength: Ultimate (UTS), MPa 330 to 430
590
Tensile Strength: Yield (Proof), MPa 260 to 310
560

Thermal Properties

Latent Heat of Fusion, J/g 390
390
Maximum Temperature: Mechanical, °C 220
210
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
34
Electrical Conductivity: Equal Weight (Specific), % IACS 110
100

Otherwise Unclassified Properties

Base Metal Price, % relative 11
31
Density, g/cm3 3.1
3.0
Embodied Carbon, kg CO2/kg material 8.2
8.6
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
54
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
2290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
46
Strength to Weight: Axial, points 30 to 39
55
Strength to Weight: Bending, points 34 to 41
53
Thermal Diffusivity, mm2/s 52
49
Thermal Shock Resistance, points 15 to 19
26

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
91.9 to 94.9
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
3.7 to 4.3
Iron (Fe), % 0 to 1.0
0 to 0.15
Lithium (Li), % 0
0.8 to 1.2
Magnesium (Mg), % 1.2 to 1.8
0.25 to 0.8
Manganese (Mn), % 0 to 0.2
0 to 0.25
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0 to 0.12
Silver (Ag), % 0
0.25 to 0.6
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.25
0 to 0.25
Zirconium (Zr), % 0
0.080 to 0.16
Residuals, % 0
0 to 0.15