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S44800 Stainless Steel vs. 5154 Aluminum

S44800 stainless steel belongs to the iron alloys classification, while 5154 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 5154 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 23
3.4 to 20
Fatigue Strength, MPa 300
100 to 160
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
26
Shear Strength, MPa 370
140 to 210
Tensile Strength: Ultimate (UTS), MPa 590
240 to 360
Tensile Strength: Yield (Proof), MPa 450
94 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 17
130
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
32
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
110

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.8
8.8
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 190
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
11 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 480
64 to 540
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 21
25 to 37
Strength to Weight: Bending, points 20
32 to 42
Thermal Diffusivity, mm2/s 4.6
52
Thermal Shock Resistance, points 19
10 to 16

Alloy Composition

Aluminum (Al), % 0
94.4 to 96.8
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0.15 to 0.35
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 62.6 to 66.5
0 to 0.4
Magnesium (Mg), % 0
3.1 to 3.9
Manganese (Mn), % 0 to 0.3
0 to 0.1
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 0.25
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15