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SAE-AISI 1021 Steel vs. 5652 Aluminum

SAE-AISI 1021 steel belongs to the iron alloys classification, while 5652 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 SAE-AISI 1021 steel and the bottom bar is 5652 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 150
47 to 77
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 17 to 27
6.8 to 25
Fatigue Strength, MPa 190 to 300
60 to 140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 310 to 320
110 to 170
Tensile Strength: Ultimate (UTS), MPa 480 to 530
190 to 290
Tensile Strength: Yield (Proof), MPa 260 to 450
74 to 260

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
610
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
140
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
120

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.6
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
12 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 530
40 to 480
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 17 to 19
20 to 30
Strength to Weight: Bending, points 17 to 18
27 to 36
Thermal Diffusivity, mm2/s 14
57
Thermal Shock Resistance, points 15 to 17
8.4 to 13

Alloy Composition

Aluminum (Al), % 0
95.8 to 97.7
Carbon (C), % 0.18 to 0.23
0
Chromium (Cr), % 0
0.15 to 0.35
Copper (Cu), % 0
0 to 0.040
Iron (Fe), % 98.8 to 99.22
0 to 0.4
Magnesium (Mg), % 0
2.2 to 2.8
Manganese (Mn), % 0.6 to 0.9
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15