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5021 Aluminum vs. 5042 Aluminum

Both 5021 aluminum and 5042 aluminum are aluminum alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is 5042 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
68
Elongation at Break, % 1.1 to 3.4
1.1 to 3.4
Fatigue Strength, MPa 85 to 110
97 to 120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
200
Tensile Strength: Ultimate (UTS), MPa 300 to 310
340 to 360
Tensile Strength: Yield (Proof), MPa 240 to 270
270 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
570
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.6
8.8
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
3.6 to 12
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
550 to 720
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 30 to 32
35 to 37
Strength to Weight: Bending, points 37
40 to 42
Thermal Diffusivity, mm2/s 57
53
Thermal Shock Resistance, points 13 to 14
15 to 16

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
94.2 to 96.8
Chromium (Cr), % 0 to 0.15
0 to 0.1
Copper (Cu), % 0 to 0.15
0 to 0.15
Iron (Fe), % 0 to 0.5
0 to 0.35
Magnesium (Mg), % 2.2 to 2.8
3.0 to 4.0
Manganese (Mn), % 0.1 to 0.5
0.2 to 0.5
Silicon (Si), % 0 to 0.4
0 to 0.2
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.15
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants