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EN 1.4408 Stainless Steel vs. 518.0 Aluminum

EN 1.4408 stainless steel belongs to the iron alloys classification, while 518.0 aluminum belongs to the aluminum 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 EN 1.4408 stainless steel and the bottom bar is 518.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
80
Elastic (Young's, Tensile) Modulus, GPa 200
67
Elongation at Break, % 34
5.0
Fatigue Strength, MPa 170
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
25
Tensile Strength: Ultimate (UTS), MPa 510
310
Tensile Strength: Yield (Proof), MPa 210
190

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 990
170
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1390
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
98
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
81

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.7
9.4
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 150
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
14
Resilience: Unit (Modulus of Resilience), kJ/m3 110
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
38
Thermal Diffusivity, mm2/s 3.9
40
Thermal Shock Resistance, points 11
14

Alloy Composition

Aluminum (Al), % 0
88.1 to 92.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.4 to 71
0 to 1.8
Magnesium (Mg), % 0
7.5 to 8.5
Manganese (Mn), % 0 to 1.5
0 to 0.35
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 9.0 to 12
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.35
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25