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S44800 Stainless Steel vs. 2219 Aluminum

S44800 stainless steel belongs to the iron alloys classification, while 2219 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 S44800 stainless steel and the bottom bar is 2219 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Elongation at Break, % 23
2.2 to 20
Fatigue Strength, MPa 300
90 to 130
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
27
Shear Strength, MPa 370
110 to 280
Tensile Strength: Ultimate (UTS), MPa 590
180 to 480
Tensile Strength: Yield (Proof), MPa 450
88 to 390

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1100
230
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 17
110 to 170
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
28 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
81 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 19
11
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 3.8
8.2
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 190
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
9.6 to 60
Resilience: Unit (Modulus of Resilience), kJ/m3 480
54 to 1060
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
44
Strength to Weight: Axial, points 21
16 to 43
Strength to Weight: Bending, points 20
23 to 44
Thermal Diffusivity, mm2/s 4.6
42 to 63
Thermal Shock Resistance, points 19
8.2 to 22

Alloy Composition

Aluminum (Al), % 0
91.5 to 93.8
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
5.8 to 6.8
Iron (Fe), % 62.6 to 66.5
0 to 0.3
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0 to 0.3
0.2 to 0.4
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 2.0 to 2.5
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.2
0 to 0.2
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0.020 to 0.1
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0
0.1 to 0.25
Residuals, % 0
0 to 0.15