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5021 Aluminum vs. AISI 310S Stainless Steel

5021 aluminum belongs to the aluminum alloys classification, while AISI 310S stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 5021 aluminum and the bottom bar is AISI 310S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 1.1 to 3.4
34 to 44
Fatigue Strength, MPa 85 to 110
250 to 280
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
79
Shear Strength, MPa 170
420 to 470
Tensile Strength: Ultimate (UTS), MPa 300 to 310
600 to 710
Tensile Strength: Yield (Proof), MPa 240 to 270
270 to 350

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 140
16
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.6
4.3
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1180
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
200 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
190 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 30 to 32
21 to 25
Strength to Weight: Bending, points 37
20 to 22
Thermal Diffusivity, mm2/s 57
4.1
Thermal Shock Resistance, points 13 to 14
14 to 16

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.15
24 to 26
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.5
48.3 to 57
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0.1 to 0.5
0 to 2.0
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0