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5252 Aluminum vs. S31727 Stainless Steel

5252 aluminum belongs to the aluminum alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 27 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 5252 aluminum and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68 to 75
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 4.5 to 11
40
Fatigue Strength, MPa 100 to 110
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
78
Shear Strength, MPa 140 to 160
430
Tensile Strength: Ultimate (UTS), MPa 230 to 290
630
Tensile Strength: Yield (Proof), MPa 170 to 240
270

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 180
1010
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 610
1390
Specific Heat Capacity, J/kg-K 910
470
Thermal Expansion, µm/m-K 24
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.7
4.7
Embodied Energy, MJ/kg 160
64
Embodied Water, L/kg 1190
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
200
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 23 to 30
22
Strength to Weight: Bending, points 31 to 36
20
Thermal Shock Resistance, points 10 to 13
14

Alloy Composition

Aluminum (Al), % 96.6 to 97.8
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 0 to 0.1
2.8 to 4.0
Iron (Fe), % 0 to 0.1
53.7 to 61.3
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.1
0