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1235 Aluminum vs. 5021 Aluminum

Both 1235 aluminum and 5021 aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is 1235 aluminum and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 28 to 34
1.1 to 3.4
Fatigue Strength, MPa 23 to 58
85 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 52 to 56
170
Tensile Strength: Ultimate (UTS), MPa 80 to 84
300 to 310
Tensile Strength: Yield (Proof), MPa 23 to 57
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 640
590
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 230
140
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
35
Electrical Conductivity: Equal Weight (Specific), % IACS 200
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.6
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1190
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 25
3.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 3.8 to 24
440 to 550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 8.2 to 8.6
30 to 32
Strength to Weight: Bending, points 15 to 16
37
Thermal Diffusivity, mm2/s 93
57
Thermal Shock Resistance, points 3.6 to 3.7
13 to 14

Alloy Composition

Aluminum (Al), % 99.35 to 100
95.2 to 97.7
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.050
0 to 0.15
Iron (Fe), % 0 to 0.65
0 to 0.5
Magnesium (Mg), % 0 to 0.050
2.2 to 2.8
Manganese (Mn), % 0 to 0.050
0.1 to 0.5
Silicon (Si), % 0 to 0.65
0 to 0.4
Titanium (Ti), % 0 to 0.060
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.1
0 to 0.15
Residuals, % 0
0 to 0.15