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S21460 Stainless Steel vs. 5086 Aluminum

S21460 stainless steel belongs to the iron alloys classification, while 5086 aluminum belongs to the aluminum alloys. There are 28 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 S21460 stainless steel and the bottom bar is 5086 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
65 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 46
1.7 to 20
Fatigue Strength, MPa 390
88 to 180
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 580
160 to 230
Tensile Strength: Ultimate (UTS), MPa 830
270 to 390
Tensile Strength: Yield (Proof), MPa 430
110 to 320

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Corrosion, °C 410
65
Maximum Temperature: Mechanical, °C 920
190
Melting Completion (Liquidus), °C 1380
640
Melting Onset (Solidus), °C 1330
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 18
24

Otherwise Unclassified Properties

Base Metal Price, % relative 14
9.5
Density, g/cm3 7.6
2.7
Embodied Carbon, kg CO2/kg material 3.0
8.8
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 160
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
5.8 to 42
Resilience: Unit (Modulus of Resilience), kJ/m3 460
86 to 770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 30
28 to 40
Strength to Weight: Bending, points 26
34 to 44
Thermal Shock Resistance, points 17
12 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 96.3
Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 17 to 19
0.050 to 0.25
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 57.3 to 63.7
0 to 0.5
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 14 to 16
0.2 to 0.7
Nickel (Ni), % 5.0 to 6.0
0
Nitrogen (N), % 0.35 to 0.5
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15