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S20910 Stainless Steel vs. 5050 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 5050 aluminum belongs to the aluminum alloys. There are 29 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 S20910 stainless steel and the bottom bar is 5050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
36 to 68
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 14 to 39
1.7 to 22
Fatigue Strength, MPa 310 to 460
45 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500 to 570
91 to 140
Tensile Strength: Ultimate (UTS), MPa 780 to 940
140 to 250
Tensile Strength: Yield (Proof), MPa 430 to 810
50 to 210

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1080
180
Melting Completion (Liquidus), °C 1420
650
Melting Onset (Solidus), °C 1380
630
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
190
Thermal Expansion, µm/m-K 16
24

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.4
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
4.1 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
18 to 330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 28 to 33
15 to 26
Strength to Weight: Bending, points 24 to 27
22 to 33
Thermal Diffusivity, mm2/s 3.6
79
Thermal Shock Resistance, points 17 to 21
6.3 to 11

Alloy Composition

Aluminum (Al), % 0
96.3 to 98.9
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0 to 0.1
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 52.1 to 62.1
0 to 0.7
Magnesium (Mg), % 0
1.1 to 1.8
Manganese (Mn), % 4.0 to 6.0
0 to 0.1
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants