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EN 1.4308 Stainless Steel vs. A201.0 Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while A201.0 aluminum belongs to the aluminum alloys. There are 29 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 1.4308 stainless steel and the bottom bar is A201.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 34
4.7
Fatigue Strength, MPa 160
97
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 510
480
Tensile Strength: Yield (Proof), MPa 200
420

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 960
170
Melting Completion (Liquidus), °C 1420
650
Melting Onset (Solidus), °C 1380
570
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
90

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 3.0
8.1
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
22
Resilience: Unit (Modulus of Resilience), kJ/m3 100
1250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 18
44
Strength to Weight: Bending, points 18
45
Thermal Diffusivity, mm2/s 4.1
46
Thermal Shock Resistance, points 11
21

Alloy Composition


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Aluminum (Al), % 0
93.7 to 95.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 65.9 to 74
0 to 0.1
Magnesium (Mg), % 0
0.15 to 0.35
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.050
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.15 to 0.35
Residuals, % 0
0 to 0.1