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S20910 Stainless Steel vs. 5254 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 5254 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 S20910 stainless steel and the bottom bar is 5254 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 14 to 39
3.4 to 22
Fatigue Strength, MPa 310 to 460
110 to 160
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500 to 570
150 to 200
Tensile Strength: Ultimate (UTS), MPa 780 to 940
240 to 350
Tensile Strength: Yield (Proof), MPa 430 to 810
100 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1080
190
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
130
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
8.8
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
11 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
73 to 550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 28 to 33
25 to 37
Strength to Weight: Bending, points 24 to 27
32 to 41
Thermal Diffusivity, mm2/s 3.6
52
Thermal Shock Resistance, points 17 to 21
10 to 16

Alloy Composition

Aluminum (Al), % 0
94.4 to 96.8
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0.15 to 0.35
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 52.1 to 62.1
0 to 0.45
Magnesium (Mg), % 0
3.1 to 3.9
Manganese (Mn), % 4.0 to 6.0
0 to 0.010
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 0.45
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants