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S32950 Stainless Steel vs. 2014 Aluminum

S32950 stainless steel belongs to the iron alloys classification, while 2014 aluminum belongs to the aluminum alloys. There are 30 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 S32950 stainless steel and the bottom bar is 2014 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 17
1.5 to 16
Fatigue Strength, MPa 330
90 to 160
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
27
Shear Strength, MPa 480
130 to 290
Tensile Strength: Ultimate (UTS), MPa 780
190 to 500
Tensile Strength: Yield (Proof), MPa 550
100 to 440

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1430
630
Melting Onset (Solidus), °C 1390
510
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 16
150
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 17
11
Density, g/cm3 7.7
3.0
Embodied Carbon, kg CO2/kg material 3.4
8.1
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 180
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.6 to 56
Resilience: Unit (Modulus of Resilience), kJ/m3 730
76 to 1330
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 28
18 to 46
Strength to Weight: Bending, points 24
25 to 46
Thermal Diffusivity, mm2/s 4.3
58
Thermal Shock Resistance, points 21
8.4 to 22

Alloy Composition

Aluminum (Al), % 0
90.4 to 95
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 26 to 29
0 to 0.1
Copper (Cu), % 0
3.9 to 5.0
Iron (Fe), % 60.3 to 69.4
0 to 0.7
Magnesium (Mg), % 0
0.2 to 0.8
Manganese (Mn), % 0 to 2.0
0.4 to 1.2
Molybdenum (Mo), % 1.0 to 2.5
0
Nickel (Ni), % 3.5 to 5.2
0
Nitrogen (N), % 0.15 to 0.35
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.6
0.5 to 1.2
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15