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EN 1.4308 Stainless Steel vs. 2011A Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while 2011A aluminum belongs to the aluminum alloys. There are 29 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 1.4308 stainless steel and the bottom bar is 2011A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
6.8 to 16
Fatigue Strength, MPa 160
75 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 510
310 to 410
Tensile Strength: Yield (Proof), MPa 200
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 960
190
Melting Completion (Liquidus), °C 1420
660
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
96

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 3.0
7.9
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
20 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 100
140 to 670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
44
Strength to Weight: Axial, points 18
28 to 37
Strength to Weight: Bending, points 18
33 to 40
Thermal Diffusivity, mm2/s 4.1
49
Thermal Shock Resistance, points 11
14 to 18

Alloy Composition


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Aluminum (Al), % 0
91.5 to 95.1
Bismuth (Bi), % 0
0.2 to 0.6
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
4.5 to 6.0
Iron (Fe), % 65.9 to 74
0 to 0.5
Lead (Pb), % 0
0.2 to 0.6
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15