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5021 Aluminum vs. EN 1.4658 Stainless Steel

5021 aluminum belongs to the aluminum alloys classification, while EN 1.4658 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 1.1 to 3.4
28
Fatigue Strength, MPa 85 to 110
530
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Shear Strength, MPa 170
580
Tensile Strength: Ultimate (UTS), MPa 300 to 310
900
Tensile Strength: Yield (Proof), MPa 240 to 270
730

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
16
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
4.5
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
240
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
1280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 30 to 32
32
Strength to Weight: Bending, points 37
26
Thermal Diffusivity, mm2/s 57
4.3
Thermal Shock Resistance, points 13 to 14
24

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.15
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 0 to 0.15
0 to 1.0
Iron (Fe), % 0 to 0.5
50.9 to 63.7
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0.1 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
5.5 to 9.5
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0