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EN 1.4008 Stainless Steel vs. 201.0 Aluminum

EN 1.4008 stainless steel belongs to the iron alloys classification, while 201.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 1.4008 stainless steel and the bottom bar is 201.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 17
4.4 to 20
Fatigue Strength, MPa 300
120 to 150
Impact Strength: V-Notched Charpy, J 31
10 to 22
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 670
370 to 470
Tensile Strength: Yield (Proof), MPa 500
220 to 400

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 760
170
Melting Completion (Liquidus), °C 1450
650
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 25
120
Thermal Expansion, µm/m-K 11
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
30 to 33
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
87 to 97

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
38
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 2.1
8.7
Embodied Energy, MJ/kg 30
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
19 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 630
330 to 1160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 24
33 to 42
Strength to Weight: Bending, points 22
37 to 44
Thermal Diffusivity, mm2/s 6.7
45
Thermal Shock Resistance, points 23
19 to 25

Alloy Composition

Aluminum (Al), % 0
92.1 to 95.1
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 12 to 13.5
0
Copper (Cu), % 0
4.0 to 5.2
Iron (Fe), % 81.8 to 86.8
0 to 0.15
Magnesium (Mg), % 0
0.15 to 0.55
Manganese (Mn), % 0 to 1.0
0.2 to 0.5
Molybdenum (Mo), % 0.2 to 0.5
0
Nickel (Ni), % 1.0 to 2.0
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Silver (Ag), % 0
0.4 to 1.0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0.15 to 0.35
Residuals, % 0
0 to 0.1