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EN 1.4823 Stainless Steel vs. 2618 Aluminum

EN 1.4823 stainless steel belongs to the iron alloys classification, while 2618 aluminum belongs to the aluminum alloys. There are 29 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 EN 1.4823 stainless steel and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 3.4
5.8
Fatigue Strength, MPa 130
110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 620
420
Tensile Strength: Yield (Proof), MPa 290
350

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1360
550
Specific Heat Capacity, J/kg-K 490
880
Thermal Conductivity, W/m-K 17
160
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
110

Otherwise Unclassified Properties

Base Metal Price, % relative 16
11
Density, g/cm3 7.6
2.9
Embodied Carbon, kg CO2/kg material 3.0
8.3
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
23
Resilience: Unit (Modulus of Resilience), kJ/m3 200
850
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
47
Strength to Weight: Axial, points 23
40
Strength to Weight: Bending, points 21
42
Thermal Diffusivity, mm2/s 4.5
62
Thermal Shock Resistance, points 17
19

Alloy Composition

Aluminum (Al), % 0
92.4 to 94.9
Carbon (C), % 0.3 to 0.5
0
Chromium (Cr), % 25 to 28
0
Copper (Cu), % 0
1.9 to 2.7
Iron (Fe), % 60.9 to 70.7
0.9 to 1.3
Magnesium (Mg), % 0
1.3 to 1.8
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.0 to 6.0
0.9 to 1.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0.1 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.040 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15