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2018 Aluminum vs. 3203 Aluminum

Both 2018 aluminum and 3203 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common. There are 30 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 2018 aluminum and the bottom bar is 3203 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 9.6
4.5 to 29
Fatigue Strength, MPa 120
46 to 92
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 270
72 to 120
Tensile Strength: Ultimate (UTS), MPa 420
110 to 200
Tensile Strength: Yield (Proof), MPa 310
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 220
180
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 510
620
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
170
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
43
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 3.1
2.8
Embodied Carbon, kg CO2/kg material 8.1
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
8.0 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 670
11 to 250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 38
11 to 20
Strength to Weight: Bending, points 41
19 to 28
Thermal Diffusivity, mm2/s 57
70
Thermal Shock Resistance, points 19
4.9 to 8.8

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
96.9 to 99
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.050
Iron (Fe), % 0 to 1.0
0 to 0.7
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
1.0 to 1.5
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0 to 0.6
Zinc (Zn), % 0 to 0.25
0 to 0.1
Residuals, % 0
0 to 0.15