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S28200 Stainless Steel vs. 2017A Aluminum

S28200 stainless steel belongs to the iron alloys classification, while 2017A aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 S28200 stainless steel and the bottom bar is 2017A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 45
2.2 to 14
Fatigue Strength, MPa 430
92 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 610
120 to 270
Tensile Strength: Ultimate (UTS), MPa 870
200 to 460
Tensile Strength: Yield (Proof), MPa 460
110 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 900
220
Melting Completion (Liquidus), °C 1380
650
Melting Onset (Solidus), °C 1330
510
Specific Heat Capacity, J/kg-K 480
880
Thermal Expansion, µm/m-K 18
23

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 7.6
3.0
Embodied Carbon, kg CO2/kg material 2.8
8.2
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 160
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 330
6.7 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 540
90 to 570
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
46
Strength to Weight: Axial, points 32
19 to 42
Strength to Weight: Bending, points 27
26 to 44
Thermal Shock Resistance, points 17
8.9 to 20

Alloy Composition

Aluminum (Al), % 0
91.3 to 95.5
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 17 to 19
0 to 0.1
Copper (Cu), % 0.75 to 1.3
3.5 to 4.5
Iron (Fe), % 57.7 to 64.1
0 to 0.7
Magnesium (Mg), % 0
0.4 to 1.0
Manganese (Mn), % 17 to 19
0.4 to 1.0
Molybdenum (Mo), % 0.75 to 1.3
0
Nitrogen (N), % 0.4 to 0.6
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15