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EN 1.4418 Stainless Steel vs. 520.0 Aluminum

EN 1.4418 stainless steel belongs to the iron alloys classification, while 520.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 1.4418 stainless steel and the bottom bar is 520.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
66
Elongation at Break, % 16 to 20
14
Fatigue Strength, MPa 350 to 480
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
25
Shear Strength, MPa 530 to 620
230
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
330
Tensile Strength: Yield (Proof), MPa 540 to 790
170

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1400
480
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 15
87
Thermal Expansion, µm/m-K 10
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
21
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
72

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 2.8
9.8
Embodied Energy, MJ/kg 39
160
Embodied Water, L/kg 130
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
39
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 31 to 36
35
Strength to Weight: Bending, points 26 to 28
41
Thermal Diffusivity, mm2/s 4.0
37
Thermal Shock Resistance, points 31 to 36
14

Alloy Composition

Aluminum (Al), % 0
87.9 to 90.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 73.2 to 80.2
0 to 0.3
Magnesium (Mg), % 0
9.5 to 10.6
Manganese (Mn), % 0 to 1.5
0 to 0.15
Molybdenum (Mo), % 0.8 to 1.5
0
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.7
0 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15