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5083 Aluminum vs. EN 1.4421 Stainless Steel

5083 aluminum belongs to the aluminum alloys classification, while EN 1.4421 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 5083 aluminum and the bottom bar is EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 1.1 to 17
11 to 17
Fatigue Strength, MPa 93 to 190
380 to 520
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 290 to 390
880 to 1100
Tensile Strength: Yield (Proof), MPa 110 to 340
620 to 950

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Corrosion, °C 65
410
Maximum Temperature: Mechanical, °C 190
870
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 580
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 120
16
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 96
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.9
2.6
Embodied Energy, MJ/kg 150
36
Embodied Water, L/kg 1170
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 42
120 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 95 to 860
960 to 2270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 29 to 40
31 to 39
Strength to Weight: Bending, points 36 to 44
26 to 30
Thermal Diffusivity, mm2/s 48
4.4
Thermal Shock Resistance, points 12 to 17
31 to 39

Alloy Composition

Aluminum (Al), % 92.4 to 95.6
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0.050 to 0.25
15.5 to 17.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
74.4 to 80.5
Magnesium (Mg), % 4.0 to 4.9
0
Manganese (Mn), % 0.4 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 0
4.0 to 5.5
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants