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S21600 Stainless Steel vs. 5110A Aluminum

S21600 stainless steel belongs to the iron alloys classification, while 5110A aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 S21600 stainless steel and the bottom bar is 5110A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 46
4.5 to 28
Fatigue Strength, MPa 360
37 to 77
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500
66 to 110
Tensile Strength: Ultimate (UTS), MPa 710
100 to 190
Tensile Strength: Yield (Proof), MPa 390
32 to 170

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 990
180
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 17
23

Otherwise Unclassified Properties

Base Metal Price, % relative 17
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.6
8.3
Embodied Energy, MJ/kg 50
150
Embodied Water, L/kg 160
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
6.8 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 370
7.6 to 200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 25
10 to 19
Strength to Weight: Bending, points 23
18 to 27
Thermal Shock Resistance, points 15
4.5 to 8.4

Alloy Composition

Aluminum (Al), % 0
98.5 to 99.8
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17.5 to 22
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 57.6 to 67.8
0 to 0.25
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 7.5 to 9.0
0 to 0.2
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.030
Residuals, % 0
0 to 0.1