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240.0 Aluminum vs. EN 1.4123 Stainless Steel

240.0 aluminum belongs to the aluminum alloys classification, while EN 1.4123 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 240.0 aluminum and the bottom bar is EN 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 240
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 380
280
Maximum Temperature: Mechanical, °C 180
840
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 96
23
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 65
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 3.2
7.7
Embodied Carbon, kg CO2/kg material 8.7
4.2
Embodied Energy, MJ/kg 150
62
Embodied Water, L/kg 1100
120

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 20
26 to 29
Strength to Weight: Bending, points 26
23 to 25
Thermal Diffusivity, mm2/s 35
6.3
Thermal Shock Resistance, points 11
26 to 29

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0.35 to 0.5
Chromium (Cr), % 0
14 to 16.5
Copper (Cu), % 7.0 to 9.0
0
Iron (Fe), % 0 to 0.5
76.7 to 84.6
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0.3 to 0.7
0 to 0.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 1.5
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0