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EN 1.4347 Stainless Steel vs. 206.0 Aluminum

EN 1.4347 stainless steel belongs to the iron alloys classification, while 206.0 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 1.4347 stainless steel and the bottom bar is 206.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 23
8.4 to 12
Fatigue Strength, MPa 320
88 to 210
Impact Strength: V-Notched Charpy, J 34
9.5
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 660
330 to 440
Tensile Strength: Yield (Proof), MPa 480
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1410
650
Melting Onset (Solidus), °C 1370
570
Specific Heat Capacity, J/kg-K 490
880
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
99

Otherwise Unclassified Properties

Base Metal Price, % relative 16
11
Density, g/cm3 7.7
3.0
Embodied Carbon, kg CO2/kg material 3.1
8.0
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 170
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
24 to 49
Resilience: Unit (Modulus of Resilience), kJ/m3 570
270 to 840
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 24
30 to 40
Strength to Weight: Bending, points 22
35 to 42
Thermal Diffusivity, mm2/s 4.0
46
Thermal Shock Resistance, points 19
17 to 23

Alloy Composition

Aluminum (Al), % 0
93.3 to 95.3
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 25 to 27
0
Copper (Cu), % 0
4.2 to 5.0
Iron (Fe), % 62.2 to 69.4
0 to 0.15
Magnesium (Mg), % 0
0.15 to 0.35
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Nickel (Ni), % 5.5 to 7.5
0 to 0.050
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15