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5050 Aluminum vs. EN 1.4938 Stainless Steel

5050 aluminum belongs to the aluminum alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 5050 aluminum and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 1.7 to 22
16 to 17
Fatigue Strength, MPa 45 to 100
390 to 520
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 91 to 140
540 to 630
Tensile Strength: Ultimate (UTS), MPa 140 to 250
870 to 1030
Tensile Strength: Yield (Proof), MPa 50 to 210
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 180
750
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 630
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 190
30
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 170
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.4
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1190
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1 to 24
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 330
1050 to 1920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 15 to 26
31 to 37
Strength to Weight: Bending, points 22 to 33
26 to 29
Thermal Diffusivity, mm2/s 79
8.1
Thermal Shock Resistance, points 6.3 to 11
30 to 35

Alloy Composition

Aluminum (Al), % 96.3 to 98.9
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0 to 0.1
11 to 12.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.7
80.5 to 84.8
Magnesium (Mg), % 1.1 to 1.8
0
Manganese (Mn), % 0 to 0.1
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants