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AISI 310S Stainless Steel vs. 5021 Aluminum

AISI 310S stainless steel belongs to the iron alloys classification, while 5021 aluminum belongs to the aluminum 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 AISI 310S stainless steel and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition


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