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EN 1.4823 Stainless Steel vs. 5449 Aluminum

EN 1.4823 stainless steel belongs to the iron alloys classification, while 5449 aluminum belongs to the aluminum alloys. There are 29 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 1.4823 stainless steel and the bottom bar is 5449 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 3.4
4.0 to 17
Fatigue Strength, MPa 130
78 to 120
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
26
Tensile Strength: Ultimate (UTS), MPa 620
210 to 330
Tensile Strength: Yield (Proof), MPa 290
91 to 260

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1400
650
Melting Onset (Solidus), °C 1360
590
Specific Heat Capacity, J/kg-K 490
900
Thermal Conductivity, W/m-K 17
140
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
110

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.6
2.8
Embodied Carbon, kg CO2/kg material 3.0
8.5
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 170
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
12 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 200
60 to 480
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
50
Strength to Weight: Axial, points 23
22 to 33
Strength to Weight: Bending, points 21
29 to 39
Thermal Diffusivity, mm2/s 4.5
56
Thermal Shock Resistance, points 17
9.4 to 15

Alloy Composition

Aluminum (Al), % 0
94.1 to 97.8
Carbon (C), % 0.3 to 0.5
0
Chromium (Cr), % 25 to 28
0 to 0.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 60.9 to 70.7
0 to 0.7
Magnesium (Mg), % 0
1.6 to 2.6
Manganese (Mn), % 0 to 1.5
0.6 to 1.1
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.0 to 6.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15