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EN 1.4415 Stainless Steel vs. 5021 Aluminum

EN 1.4415 stainless steel belongs to the iron alloys classification, while 5021 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EN 1.4415 stainless steel and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 17 to 20
1.1 to 3.4
Fatigue Strength, MPa 470 to 510
85 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 520 to 570
170
Tensile Strength: Ultimate (UTS), MPa 830 to 930
300 to 310
Tensile Strength: Yield (Proof), MPa 730 to 840
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 790
180
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 19
140
Thermal Expansion, µm/m-K 9.9
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
120

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 3.6
8.6
Embodied Energy, MJ/kg 51
150
Embodied Water, L/kg 120
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
3.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
440 to 550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 29 to 33
30 to 32
Strength to Weight: Bending, points 25 to 27
37
Thermal Diffusivity, mm2/s 5.1
57
Thermal Shock Resistance, points 30 to 34
13 to 14

Alloy Composition

Aluminum (Al), % 0
95.2 to 97.7
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 11.5 to 13.5
0 to 0.15
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 75.9 to 82.4
0 to 0.5
Magnesium (Mg), % 0
2.2 to 2.8
Manganese (Mn), % 0 to 0.5
0.1 to 0.5
Molybdenum (Mo), % 1.5 to 2.5
0
Nickel (Ni), % 4.5 to 6.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.1 to 0.5
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15

Comparable Variants